Gran Turismo 4

Gran Turismo 4
Developer: Polyphony Digital Publisher: Sony Computer Entertainment Platform: PlayStation 2 Released in JP: December 28, 2004 Released in US: February 22, 2005 Released in EU: March 9, 2005 Released in KR: March 10, 2005 This game has unused areas. This game has unused modes / minigames. This game has unused text. This game has debugging material. This game has regional differences. This game has a prototype article This game has a bugs page

To do: Try to find any revisional differences, like the Greatest Hits versions. Do a section on the Online Test Version (Japan) and Online Public Beta (US) of the game. Both versions have leftovers for the Team Oreca variant of the Audi R8 LMP that would appear in GTPSP (banner, thumbnail), cover them. Check if the game has leftovers from the prototypes or the predecessor game Document unused menu textures Apparent screenshots of an E3 build have been found, including screenshots for an early version of the Arcade Mode menu. Unused Japanese narration for the C6 Corvette and Tiburon Turbulence, plus an alternate narration for the Amuse S2000 R1.

Despite being delayed for over a year and a half, Gran Turismo 4 is considered by many to be one of the best games in the series, and one of the best racing games of all time. Featuring over 700 cars and 51 tracks, this one adds a lot more content than its predecessor and is one of five games on the PS2 to have 1080i support (one of the other ones being Tourist Trophy, also from the same developer).

The controversial Standard cars from the later PS3 games originated here.

And let’s not forget, that every single time you fail your license test, the game trolls you with the song “Oh Yeah” by Yello.

Sub-Pages

Prototype Info

Bugs

Manufacturers Assets relating to manufacturers that didn't make the cut, as well those that did make it.

Regional Differences Licensing and marketing choices resulted in lots of changes between regions, while the Korean version strives to add some local content.

Post-Release

Mazda MX-5 Edition A special edition demo of the game, featuring the then-concept/pre-production version of the third-generation Mazda MX-5.

Cheat Codes

Several previously undiscovered cheat codes were found in 2023, nearly 20 years after the game's release. These codes are usable only after 365 game days have passed.

• 10,000,000 Credits (GT Mode Screen): Select, Left, Right, Right, Down, Up, Up, Left, Down, Up, Right, Left, Down, L1, R1, Select
• Pass any license (License Selection Screen): Select, R1, Select, R1, Select, L2, L2, R2, R2, L1, Select, L1, Select
• Gold any specific license test (License Test Selection Screen): Select, Select, R1, R2, L2, L2, Select, L1, R1, Select, R2, L1, Select
• Gold any event (Event Course Selection Screen): Select, L1, Up, Up, Select, R1, Down, Down, Select, L2, Select, R2, Select

There is an extra code usable in the Mission Hall, which also adds 10,000,000 Credits. It is presumably implemented incorrectly and should instead allow completing any mission. The code is Select, R2, Select, R2, L1, L2, L2, Select, L1, R1, Select, R1, Select.

(Source: Nenkai)

Special Settings

A hidden menu can be accessed by going to the Options screen and inputting L1, Up, L2, Down, R1, Left, R2, Right, Start, Start on the second controller; the sound heard when entering a menu from the main menu will then be played to confirm the right input. Note that the code must be entered each time the player visits the screen.

The two secret options associated with the input are named Secret and Monitor, both part of Miscellaneous part of the Options menu.

Function Overview

Secret (Special Settings)

This portion of the menu works like the PS3-era secret menus, where available tracks and cars can be restricted, suggesting it's intended for kiosk-related uses.

• Specific Cars: Restricts the cars available in Arcade Mode to those in the Favorites list in Arcade Mode. This option is not available if no favorites have been yet defined.
• Specific Courses: Restricts the courses available in Arcade Mode to those set in Course Registration Settings, which is primarily an option related to LAN mode.
• Specific Opponents: Restricts the opponent cars chosen in Arcade Mode to those in the Favorites list in Arcade Mode.
• Specific Makes: Allows the game to be set to only feature a certain manufacturer. When this is the case, you cannot enter Gran Turismo Mode, and the title screen's background movie is changed to a generic one with the chosen manufacturer on top of the game logo on the title screen. Selecting none, the default option, reverts to normal gameplay. An example can be seen on the MX-5 Edition's title screen.

Monitor (Detail Monitor Settings)

This portion of the menu allows you to adjust the camera and the display of the screen during races.

• Flag: Four flags can be chosen (FLAG_NONE, FLAG_ROTY, FLAG ROTX, and FLAG_ROTX|FLAG_ROTY). These appear to deal with settings on each horizontal/vertical axis, but it does not appear to affect anything.
• Zoom: Adjust the field of view, in range of 0.00 to 3.00. Does not affect the roof camera.
• Distance: Adjusts the distance from the viewpoint of the player's camera between 200 to 1200 millimeters; the default setting is 276 mm.
• Width: Adjusts the width of the display area, between 200 to 600 millimeters.
• Height: Adjusts the height of the display area, between 200 to 400 millimeters.
• Aspect: Adjusts the pixel aspect ratio, between 0.00 to 2.00.
• Overscan Factor: Obvious what it adjusts, the value is 0.00 to 2.00.
• Border Width (Left, Right, Top, Bottom): Adjusts the width of each side of the screen border in millimeters. The range of each is 0 (default) to 300 millimeters.

The default settings depends on the selected aspect ratio mode:

Setting	4:3	16:9
Zoom	1.00	1.00
Distance	238	276
Width	275	425
Height	205	240
Aspect	0.96	0.97
Overscan Factor	1	1
Border Width (all)	0	0

(Discovery: TheAdmiester, Dezent, Nenkai, SenaUW (2nd controller requirement))

Setting the zoom option to 0.80 provides a field of view on all cameras that is very similar to that of the roof camera.

Unused Car Assets

To do: There's a lot more unused assets, including some dupes.

Ford GT (No Stripe) '05

While not normally accessible in Arcade Mode (except in two-player races, if loaded from a GT Mode save), the Ford GT (No Stripe) '05 has an Arcade Mode thumbnail.

Ford Model T Tourer '15

There is an unused alternate banner for the Ford Model T Tourer '15 featuring an alternate logo placement, with it's internal name suggesting that a 1914 model was considered for inclusion instead.

model_t_tourer_14 (unused)	model_t_tourer_15 (used)

(Source: Sal 89 (Gran Turismo Wiki))

Nissan 350Z Gran Turismo 4 Limited Edition (Z33) '05

To do: Verify car names; only the USDM one is verified and even then it's from GTPSP.

There are two alternate logos for what can be described as Japanese and American equivalents of the Nissan 350Z Gran Turismo 4 Limited Edition (Z33) '05 (since Nissan marketed the GT4 Limited Edition car simply as the 35th Anniversary model outside Europe); the model that appears in all versions of the game is the European model, evident with the European-sized license plates and the fact Nissan only marketed the model as such in Europe.

Of note is that string for the American model appears in GTPSP, but not the Japanese model.

Nissan 350Z 35th Anniversary (Z33) '05	Nissan Fairlady Z 35th Anniversary (Z33) '05

Additionally, there is also an entry for an engine that would have been used by the Japanese and American 35th Anniversary model.

Property	Used	Unused
Peak power (rpm)	6400	6200
Horsepower (ps)	300	278
Torque (kgf.m)	35.89	33.49
Rev limit (rpm)	7000	7500

(Source: Sal 89 (Gran Turismo Wiki))

Chevrolet Corvette (C6)

A car banner for a Chevrolet Corvette (C6), named "corvette_c6_coupe_04", can be found in the game's car banner logos folder (GT4.VOL/piece/car_logo2). The logo asset itself appears to be a simple placeholder containing the car's internal name as mentioned, created with one of the game's default white sans-serif fonts, similar to the Vemac logo asset.

The C6 Corvette would debut in the series with the Z06 model in Gran Turismo 5 Prologue.

(Source: FMecha (Information), Sal 89 (Banner))

GT3 Leftover Parts

The Mazda 787B '91 and Volkswagen New Beetle RSi '00 still have default turbocharger parts (and in case of the New Beetle RSi, matching sports and racing intercoolers) as carryovers from GT3 despite both cars' aspiration being corrected from turbocharged to naturally aspirated in GT4.

(Source: Misuka ミスカ (Intercooler parts), Sal 89 (Turbo parts))

Unused Race Events

There is an unused race event in the game called Road Going Formula (misspelled as "Road Going Fomula Cup" on the flyer card; the word "Cup" is also missing on the event's actual name). Judging from its filename (ex_roadgoing_0000), this was planned to be an Extreme Hall event. The event is present in the game's event database, and completing it would have awarded the Caterham Seven Fireblade '02.

• Description: "A heated battle between formula machines that race on public roads." (European English)
• Event Type: Single Race (5 Races)
• Regulations:

• Cars Permitted: No restrictions

• Rival Cars:

• Suzuki GSX-R/4 Concept '01

• Race #1: Laguna Seca Raceway

• Number of Laps: 3
• Rewards Table:

Position	1st	2nd	3rd	4th	5th	6th
Credits	15,000 Cr.	7,500 Cr.	5,000 Cr.	4,900 Cr.	1,500 Cr.	800 Cr.

• Race #2: Grand Valley Speedway Reverse

• Number of Laps: 3

• Race #3: Tokyo R246

• Number of Laps: 2

• Race #4: Suzuka Circuit

• Number of Laps: 2

• Race #5: Fuji Speedway 2005

• Number of Laps: 2

(Source: Hatersbby (discovery), Sal 89 (information and investigation), TheAdmiester (additional information))

Notes

• The event's flyer features an image of the Caterham Seven Fireblade '02 (along with the only opponent car for the event, the Suzuki GSX-R/4 Concept '01), which is not actually defined as an opponent car due to the car having a "special" (restricted to Time Trials and 2-car races in the Arcade Mode, due to high polygon usage) status.

Unused Driving Missions

There are 34 Driving Missions in this game, divided into four mission genres (The Pass, Three Lap Battle, Slipstream Battle, and One Lap Magic, which is divided into two parts for prize cars purposes). However, it seems that there were plans for a fifth type of Driving Missions called Chase Battle, each with six challenges, all of them seemingly themed after touge (mountain pass) racing, and are set on "rally" city courses, which typically is designed for two cars on the grid.

#	Event Name	Course	Description Text (US English)
35	Chase Battle: Lancia Rally Machine Showdown!	Citta di Aria	This is a chase battle where you start with a fixed time difference between you and your opponent. If you can reduce this time difference within one lap you will win, but if this increases you will lose. The first round is a rally car contest on the Italian street course.
36	Chase Battle: Lancer Evo Showdown!	Costa di Amalfi	Chase the next level of super rally prototypes in a rally version of the Lancer Evo IV. Make up for the massive difference between the competing cars with your driving skills.
37	Chase Battle: Peugeot Rally Machine Showdown!	George V Paris	This is a night-time French Rally car showdown, taking place in the street stage that passes through the Arc de Triomphe in Paris. You are at the controls of the monster 205T16, racing against the latest generation of 206 rally cars.
38	Chase Battle: Prototype Showdown!	Citta di Aria Reverse	Two monster cars with a total of 1600 horsepower catapult through the distinctively narrow streets of an old Italian town. Only Gran Turismo brings to life this dream battle in this dream situation.
39	Chase Battle: BMW 12-cylinder Showdown!	Costa di Amalfi Reverse	This is a serious race between the 2 Le Mans winners boasted by BMW along the Amalfi Coast on the Tyrrhenian Sea. The only thing that can catch the higher level V12LMR is the driver's technique.
40	Chase Battle: Mercedes Showdown!	George V Paris Reverse	This is a course setup that runs from Champs d'Elysees through George V Avenue and under the Arc de Triomphe in the quiet residential streets. This is an evenly matched battle on the street between 2 racing Mercedes.

These missions also have description text for the pre-race screen, although in the US version of the game, Mission 36's and 38's pre-race text are duplicates of Mission 35's and 37's, respectively; as such, the text dumps for Mission 36 and 38 are from the European version.

#	Pre-Race Text
35	Here your rival is a Lancia Delta S4. As this is one of the cars from the period of inception of 4WD, the understeer is so severe it is difficult to turn, yet it has intense speed on the straights. You will give chase in a finely-balanced HF Integrale.
36	Although your rival has better performance across the board, from horsepower and weight to cornering ability, it seems that the tuning settings are imbalanced. Take full advantage of the resulting hesitancy in the rival car's driving to snatch a victory.
37	This is the 205 T16 monster rally car, fitted with a 350 horsepower mid-mounted engine. Although this offers overwhelming speed on the straights, it may not do so well on tight turns. Try to prevent your rivals from closing the gap on corners and breaking away from you.
38	Open and closed canopy - although with a difference in style, both are among the world's fastest prototype machines. For cars with downforce, the key to winning is your recovery technique when a car has closed the gap.
39	The key to the Amalfi Circuit is making small turns to the inside of the numerous stop-and-start hairpins without overrunning the corners. Drive through the few high-speed corners without error, and pray for more power....
40	On this course it is hard make a difference in position using corners as the course layout is too narrow. The timing of when you hit the accelerator when you come out of a small corner is everything in this challenge. Don't forget precision in handling, and avoiding collisions with the walls.

(Discovery: YakumoyukariRZ, Dezent (pre-race text dumps))

Hidden Courses

License Tracks

The license-specific tracks in this game consists of the variations of the Driving Park Gymkhana (the normally accessible version is named gymkhana_free) track and the slalom variant of Fuji Speedway (before the 2005 redesign).

• fisco_slalom: Used in IB-6 and IB-7 License tests.
• gymkhana: Used in the B License Coffee Break test.
• gymkhana_maze: Used in the S License Coffee Break test.
• gymkhana_spiral_r: Used in the International B License Coffee Break test.
• gymkhana_spral (note the typo): Used in the A License Coffee Break test.
• gymkhana_super: Used in the International A License Coffee Break test, although the name suggests that it was originally planned to be S License's Coffee Break challenge.

Drivable Photo Travel Tracks

To do: Test further the remaining tracks, or at least describe what xTimelessGaming did on the video below.

As it turns out, you can drive on some of the places used in Photo Travel mode by cheat methods as they are treated as tracks by the game. However, you can only go so far, as it's very limited on what you can actually drive on.

The following locations has been tested:

• Beacon Hills: Only some of the roads can be driven before the player hits the invisible walls.
• Brooklyn: A very short map; the player can only drive on the dock you're on, as there are barriers surrounding it.
• Grand Canyon: Like the Brooklyn map, by the size of the map here, it really shows how far you can go, which isn't much. You can drive on and off the cliffside though, so that's cool. The course map for this track is taken from the namesake rally course.
• Times Square: It is possible to go down most of the main strip here. The map is actually placed to the right of the New York course, as its logo is shown before you start and the map is displayed while driving.
• Tsumago: Short and cramped is the best way to describe this one, and you can only drive on some of the village's roads, not all.

Grand Canyon Short Track

A track icon for Grand Canyon Short Track can be found in the game's track logo folder (GT4.VOL/piece/crs_logo). This rally track was used only in a Driving School test in Gran Turismo 4 Prologue and did not return for the game.

Unused Grid Slots

The Las Vegas Drag Strip, although only used for 0-400 tests, has a functional grid placement for the left-hand side of the dragway (normally only the right-hand side is used). The AI also works in the left lane, although its behavior after crossing the finish line seems to vary depending on the way the drag strip has been forced:

• If a racing event edited to take place in Las Vegas is loaded, the AI at the left lane will attempt to drive into the right lane once the finish line is crossed (see video).
• If the drag strip is forced by overwriting the memory address used for course selection at the right time, the car at the left will stay within its lane well until the wall that separates both lanes ends, then both cars will attempt to drive into the rightmost wall crashing into it.

Unused Rear Wing Support

There are 222 cars that can have a custom rear wing installed from GT Auto's Wing Shop. On top of those, there are eight cars that normally does not allow installation of a rear wing, but allows installation of one if car-specific restrictions are removed (complete with proper wing placement and wing parts):

• Alfa Romeo Giulia Sprint GTA 1600 '65
• BLITZ ER34 D1 spec 2004 (D1GP) '04
• Ford GT LM Race Car '02
• Mazda MX-Crossport '05
• Mercury Cougar XR-7 '67
• Subaru IMPREZA Super Touring Car '01
• Subaru IMPREZA Rally Car Prototype '01
• Toyota SPRINTER TRUENO GT-APEX (AE86) Shuichi Shigeno Version '00

Eight additional cars have correct wing placement, but with missing parts if a rear wing is forcibly installed:

• Buick Special '62
• Chevrolet Corvette Convertible (C1) '54
• Ford Model T Tourer '15
• Mitsubishi CZ-3 Tarmac '01
• Mitsubishi PAJERO Rally Raid Car '85
• Nissan EXA CANOPY L.A.Version Type S '88
• Nissan Fairlady 2000 (SR311) '68
• Toyota RSC '01

(Source: Sal 89 (discovery))

Unused Wheel Codes

Although aftermarket wheels do not usually appear in Today's Special section of GT Auto's Wheel Shop, they do have names in that format (two first letters signifying manufacturer, and a four-digit identifier number; in most cases, the first digits are always 02).

Wheel Filename	Wheel Name (Wheel Shop)	Wheel Name (Today's Special)
brdg001w	BRIDGESTONE 001	BR0204
brdg002w	BRIDGESTONE 002	BR0205
brdg003w	BRIDGESTONE 003	BR0206
brdg004w	BRIDGESTONE 004	BR0207
brdg005w	BRIDGESTONE 005	BR0208
brdg006w	BRIDGESTONE 006	BR0209
brdg007w	BRIDGESTONE 007	BR0210
bbs_001w	BBS 001	BB0211
bbs_002w	BBS 002	BB0212
bbs_003w	BBS 003	BB0213
bbs_004w	BBS 004	BB0214
bbs_005w	BBS 005	BB0215
bbs_006w	BBS 006	BB0216
bbs_007w	BBS 007	BB0217
bbs_008w	BBS 008	BB0218
bbs_009w	BBS 009	BB0219
bbs_010w	BBS 010	BB0220
bbs_011w	BBS 011	BB0221
bbs_012w	BBS 012	BB0222
bbs_013w	BBS 013	BB0223
bbs_014w	BBS 014	BB0224
bbs_015w	BBS 015	BB0225
bbs_017w	BBS 016	BB0227
bbs_018w	BBS 017	BB0228
bbs_019w	BBS 018	BB0229
bbs_020w	BBS 019	BB0230
bbs_021w	BBS 020	BB0231
dnlp001w	DUNLOP 001	DN0221
dnlp002w	DUNLOP 002	DN0222
dnlp003w	DUNLOP 003	DN0223
dnlp004w	DUNLOP 004	DN0224
dnlp005w	DUNLOP 005	DN0225
dnlp006w	DUNLOP 006	DN0226
dnlp007w	DUNLOP 007	DN0227
dnlp008w	DUNLOP 008	DN0228
dnlp009w	DUNLOP 009	DN0229
enke001w	ENKEI 001	EN0209
enke002w	ENKEI 002	EN0210
enke003w	ENKEI 003	EN0211
enke004w	ENKEI 004	EN0212
enke005w	ENKEI 005	EN0213
enke006w	ENKEI 006	EN0214
enke007w	ENKEI 007	EN0215
enke008w	ENKEI 008	EN0216
enke009w	ENKEI 009	EN0217
enke010w	ENKEI 010	EN0218
enke011w	ENKEI 011	EN0219
enke012w	ENKEI 012	EN0220
enke013w	ENKEI 013	EN0221
enke014w	ENKEI 014	EN0222
enke015w	ENKEI 015	EN0223
enke016w	ENKEI 016	EN0224
enke017w	ENKEI 017	EN0225
enke018w	ENKEI 018	EN0226
enke019w	ENKEI 019	EN0227
enke020w	ENKEI 020	EN0228
enke021w	ENKEI 021	EN0229
enke022w	ENKEI 022	EN0230
enke023w	ENKEI 023	EN0231
enke024w	ENKEI 024	EN0232
enke025w	ENKEI 025	EN0233
enke026w	ENKEI 026	EN0234
enke027w	ENKEI 027	EN0235
enke028w	ENKEI 028	EN0236
enke029w	ENKEI 029	EN0237
enke030w	ENKEI 030	EN0238
enke031w	ENKEI 031	EN0239
enke032w	ENKEI 032	EN0240
enke033w	ENKEI 033	EN0241
enke034w	ENKEI 034	EN0242
enke035w	ENKEI 035	EN0243
enke036w	ENKEI 036	EN0244
enke037w	ENKEI 037	EN0245
enke038w	ENKEI 038	EN0246
enke039w	ENKEI 039	EN0247
enke040w	ENKEI 040	EN0248
enke041w	ENKEI 041	EN0249
enke042w	ENKEI 042	EN0250
enke043w	ENKEI 043	EN0251
enke044w	ENKEI 044	EN0252
enke045w	ENKEI 045	EN0253
enke048w	ENKEI 046	EN0256
enke049w	ENKEI 047	EN0257
enke050w	ENKEI 048	EN0258
flkn001w	FALKEN 001	FL0218
flkn002w	FALKEN 002	FL0219
oz__002w	OZ 001	OZ0192
oz__003w	OZ 002	OZ0193
oz__004w	OZ 003	OZ0194
oz__005w	OZ 004	OZ0195
oz__006w	OZ 005	OZ0196
oz__007w	OZ 006	OZ0197
oz__008w	OZ 007	OZ0198
oz__009w	OZ 008	OZ0199
oz__010w	OZ 009	OZ0200
oz__011w	OZ 010	OZ0201
oz__012w	OZ 011	OZ0202
oz__013w	OZ 012	OZ0203
oz__014w	OZ 013	OZ0204
oz__015w	OZ 014	OZ0205
oz__016w	OZ 015	OZ0206
oz__017w	OZ 016	OZ0207
oz__018w	OZ 017	OZ0208
oz__019w	OZ 018	OZ0209
oz__020w	OZ 019	OZ0210
oz__021w	OZ 020	OZ0211
oz__022w	OZ 021	OZ0212
oz__023w	OZ 022	OZ0213
oz__024w	OZ 023	OZ0214
oz__025w	OZ 024	OZ0215
oz__026w	OZ 025	OZ0216
oz__027w	OZ 026	OZ0217
oz__028w	OZ 027	OZ0218
oz__029w	OZ 028	OZ0219
oz__030w	OZ 029	OZ0220
oz__032w	OZ 030	OZ0222
oz__033w	OZ 031	OZ0223
rays001w	RAYS 001	RA0237
rays002w	RAYS 002	RA0238
rays003w	RAYS 003	RA0239
rays004w	RAYS 004	RA0240
rays005w	RAYS 005	RA0241
rays006w	RAYS 006	RA0242
rays007w	RAYS 007	RA0243
rays008w	RAYS 008	RA0244
rays009w	RAYS 009	RA0245
rays010w	RAYS 010	RA0246
rays011w	RAYS 011	RA0247
rays012w	RAYS 012	RA0248
rays013w	RAYS 013	RA0249
rays014w	RAYS 014	RA0250
rays015w	RAYS 015	RA0251
rays016w	RAYS 016	RA0252
rays017w	RAYS 017	RA0253
rays018w	RAYS 018	RA0254
rays021w	RAYS 019	RA0257
rays022w	RAYS 020	RA0258
rays023w	RAYS 021	RA0259
rays024w	RAYS 022	RA0260
rays025w	RAYS 023	RA0261
rays026w	RAYS 024	RA0262
spln001w	Speedline 001	SP0219
spln002w	Speedline 002	SP0220
spln003w	Speedline 003	SP0221
spln004w	Speedline 004	SP0222
spln005w	Speedline 005	SP0223
spln006w	Speedline 006	SP0224
spln007w	Speedline 007	SP0225
spln008w	Speedline 008	SP0226
spln009w	Speedline 009	SP0227
spln010w	Speedline 010	SP0228
spln011w	Speedline 011	SP0229
spln012w	Speedline 012	SP0230
spln013w	Speedline 013	SP0231
spln014w	Speedline 014	SP0232
spln015w	Speedline 015	SP0233
spln016w	Speedline 016	SP0234
spln017w	Speedline 017	SP0235
spln018w	Speedline 018	SP0236
spln019w	Speedline 019	SP0237
spln020w	Speedline 020	SP0238
spln021w	Speedline 021	SP0239
spln022w	Speedline 022	SP0240
spln023w	Speedline 023	SP0241
spln024w	Speedline 024	SP0242
spln025w	Speedline 025	SP0243
spln026w	Speedline 026	SP0244
spln027w	Speedline 027	SP0245
spln028w	Speedline 028	SP0246
spln029w	Speedline 029	SP0247
spln030w	Speedline 030	SP0248
spln031w	Speedline 031	SP0249
spln032w	Speedline 032	SP0250
spln033w	Speedline 033	SP0251
spln034w	Speedline 034	SP0252
spln035w	Speedline 035	SP0253
spln036w	Speedline 036	SP0254
spln037w	Speedline 037	SP0255
spln038w	Speedline 038	SP0256
ykhm001w	YOKOHAMA 001	YK0214
ykhm002w	YOKOHAMA 002	YK0215
ykhm003w	YOKOHAMA 003	YK0216
ykhm004w	YOKOHAMA 004	YK0217
ykhm005w	YOKOHAMA 005	YK0218
ykhm006w	YOKOHAMA 006	YK0219
ykhm007w	YOKOHAMA 007	YK0220
ykhm008w	YOKOHAMA 008	YK0221
ykhm009w	YOKOHAMA 009	YK0222
ykhm010w	YOKOHAMA 010	YK0223
ykhm011w	YOKOHAMA 011	YK0224
ykhm012w	YOKOHAMA 012	YK0225
ykhm013w	YOKOHAMA 013	YK0226
ykhm014w	YOKOHAMA 014	YK0227
ykhm015w	YOKOHAMA 015	YK0228
ykhm016w	YOKOHAMA 016	YK0229
ykhm017w	YOKOHAMA 017	YK0230
ykhm018w	YOKOHAMA 018	YK0231
ykhm019w	YOKOHAMA 019	YK0232
ykhm020w	YOKOHAMA 020	YK0233
ykhm021w	YOKOHAMA 021	YK0234
ykhm022w	YOKOHAMA 022	YK0235
ykhm023w	YOKOHAMA 023	YK0236
ykhm024w	YOKOHAMA 024	YK0237
ykhm025w	YOKOHAMA 025	YK0238

Unused Music

GT3 Songs

The Japanese version of the game features 26 hidden songs from (also the Japanese releases of) GT3, GTC, and GT4P, under the file names of race_jnn (where nn is a number; race_j14 is skipped). These are as follows:

File Name	Artist	Title	Featured first in...	Notes
race_j01	Lenny Kravitz	Are You Gonna Go My Way? (GRAN TURISMO Remix)	Gran Turismo 3: A-spec
race_j02	Ash	Shark	Gran Turismo 3: A-spec
race_j03	daiki kasho	Glowl	Gran Turismo 3: A-spec
race_j04	daiki kasho	Mirage	Gran Turismo 3: A-spec
race_j05	daiki kasho	Obscure	Gran Turismo 3: A-spec
race_j06	daiki kasho	Sky Scraper	Gran Turismo 3: A-spec
race_j07	daiki kasho	Strike Breaker	Gran Turismo 3: A-spec
race_j08	Death In Vegas	Aisha	Gran Turismo 3: A-spec
race_j09	Feeder	7 Days In The Sun	Gran Turismo 3: A-spec
race_j10	Feeder	Buck Rogers	Gran Turismo 3: A-spec
race_j11	Feeder	Just A Day	Gran Turismo 3: A-spec
race_j12	Grand Theft Audio	Avarice	Gran Turismo 3: A-spec
race_j13	Grand Theft Audio	Dead Man Leaving	Gran Turismo 3: A-spec
race_j15	Grand Theft Audio	Wake Up In Your Own Mind	Gran Turismo 3: A-spec
race_j16	Muse	Sober (Saint US Mix)	Gran Turismo 3: A-spec
race_j17	Overseer	Screw Up (edited version for GT3)	Gran Turismo 3: A-spec
race_j18	Overseer	Stompbox (Radio Edit)	Gran Turismo 3: A-spec
race_j19	Overseer	Supermoves	Gran Turismo 3: A-spec
race_j20	Dakota Star	What to Believe	Gran Turismo 4: Prologue	early version
race_j21	daiki kasho	Good Days Bad Days	Gran Turismo 4: Prologue
race_j22	Dakota Star	Break Down	Gran Turismo 4: Prologue	early version
race_j23	daiki kasho	2/K	Gran Turismo 4: Prologue
race_j24	Bullet	The Antidote	Gran Turismo 4: Prologue	early version
race_j25	daiki kasho	Continuation	Gran Turismo Concept
race_j26	daiki kasho	Heaven	Gran Turismo Concept
race_j27	daiki kasho	Turbo	Gran Turismo Concept

Unused Jingles

Three jingles seem to be either unused or included in a very early patch of the Japanese version of the game. These are the following tunes:

Error Handler

To do: Get a screenshot of the "blue clock of death".

During the loading screen, if the game fails to read the disc, the clock in the loading screen will turn red. If the game does recover from this error (the game continues to attempt reading the disc every second), the clock will turn back to white again.

More rarely, if the game ever runs out of memory or fails to allocate memory when loading, the clock will turn blue.

(Source: Nenkai)

Debug Screens

This needs some investigation. Discuss ideas and findings on the talk page. Specifically: How to enable debug Screen?

Four debug screens have been found in the game, with varying results depending on the version. These have been tested on the European, Japanese and Online Public Beta (US) releases:

demo_movie

Just a pitch black screen. Pressing START returns to the previous menu. Identical in all versions of the game.

language

Only available in the European version, makes use of the background image featured in the language selection screen in GT4P, with now untextured selectable icons.

Selecting the 'Debug' option results in the text lines being replaced with their IDs, while selecting 'ENGLISH (US)' or any of the Eastern languages breaks all of the game's graphics, with the only working text being placeholders and the cars' names:

list_box

Identical in the European and Japanese releases, and slightly different in the Online Public Beta, seems to be a test for menu mechanisms similar to those of the Music Theater menu.

• Items named after colors in a very, very long list can be selected with X/O, and de-selected with SQUARE/TRIANGLE.
• In some versions, selecting an item then selecting another one that is not right next to it also highlights all the items in-between.
• The L1/R1 buttons don't seem to have effect despite the on-screen indications.
• Selecting the button with the spinning GT logo brings the player to another screen with other five spinning GT logos in front of grey squares.
  • In OPB, this button features a spinning trophy, and the screen it goes to doesn't feature any objects.
• The other two buttons at the left of the screen determine whether or not the list is scrollable.

slide

In the European and OPB versions, this screen tests the Slideshow mode with the same succession of images normally available in the Music Theater / Jukebox. The images appear successfully in the European version, while the OPB version can't display any images and softlocks after pressing Start.

In the Japanese release, loading this menu goes to the Music Theater.

Version Differences

North American Reprint

A late Greatest Hits reprint of the North American version with a version number of 2.00 in the SYSTEM.CNF file (as opposed to 1.01 in the original release and earlier Greatest Hits copies). The SYSTEM.CNF file has a modification date of June 26, 2007, suggesting this is a late rerelease indeed. The only changes in this version are alterations to the following course files inside GT4.VOL:

• 20r60r
• grandcanyon
• hongkong
• lasvegas
• newyork
• r_20r60r
• r_grandcanyon
• r_hongkong
• r_newyork

The actual impact of these changes is unknown.

(Source: TheMechasaur (dumping the release), Original TCRF research (documenting version differences))

Oddities

Mazda RX-8 Concept (Type-II) '01

Although the car is available in multiple colors in Arcade Mode, when the Mazda RX-8 Concept (Type-II) '01 is obtained from earning all silver times in the International B License, the color the player receives is always in RX-8 Yellow color, leaving all other six colors seemingly unused in GT Mode. All other license prize cars available in multiple colors, such as the Volkswagen Lupo 1.4 '02 (from finishing the National B License) and Jensen Interceptor MkIII '74 (from getting all gold in International B License), are given to the player in any of each cars' color choices.

Because of this oddity, the car's other colors were left seemingly forgotten in the later games, they became hidden and unused in the PSP game and completely absent from the PlayStation 3-era games of the series.

Additionally, if it or its predecessor, the Mazda RX-8 Concept (Type-I) '01, is forced to appear in the dealership, the car exhibits a different behavior from those without a listed sale price, in which the player can purchase the car at no cost instead of being blocked from doing so. An another case is for the Mazda MX-5 '05. If it is added to the dealership through adding an entry in the purchasable car list for Mazda dealer, it will act in the same manner as the two Mazda RX-8 Concepts, or rather, the player can acquire it for free.

Toyota 7 Race Car '70

In Arcade Mode, it is possible to drive the Toyota 7 Race Car '70 on dirt or snow tracks, even without using the car switch glitch. However, doing so results in the car's wheels appearing to be hollow, with the car being difficult to drive as a result; additionally, when the replay is played back, the tire information is shown as "-/-".

If this is done in 2 Player Battle with Player 2 choosing the car in question, the tires will appear properly (although not fully fitting the car in size), with proper drivability.

Mitsubishi Lancer Evolution Super Rally Car '03 Intercooler Parts

Despite the car being a Rally Car, it doesn't have the "regular" tuning options like the others racing cars. This one is the only racing car to have intercooler parts.

Dodge Viper GTS-R Team Oreca '00 Racing Exhaust

If playing the North American version of the game, a free Racing Exhaust can be purchased for free for the Dodge Viper GTS-R Team Oreca '00. This is actually a GT3 leftover, since also here the car is affected by the same problem. This issue will not be fixed until Gran Turismo 5.

Citta di Aria in Arcade Mode

For some reason, Citta di Aria is the only track that cannot be used in Arcade Mode's Single Race mode. However it can be selected in Time Trial and 2 Player Battle modes.