1980s & 1990s Gr.A RS500, E30, 190E, 240, Supra, R31, R32, DTM, BTCC, ATCC

[05XR8]

We definitely need the Lotus Carlton, Commodore or Falcon or all three. We need a RWD four door sport sedan from the 1980s.

 

[05XR8]

Well, that’s sorted for the 240. Stage 1 weight reduction drops the weight from 1324kg to 1191kg. Sweet!
All engine parts max at 354 BHP. Sweet again! Stroke & bore raise engine capacity to 2086cc.

Edit: Updated OP with Volvo 240 specs. 320-340BHP/1100kg
The wagon is nice. Has a 50:50 weight distribution at Stage 2 weight reduction(1098kg) with 2 kg of ballast to bring weight up to 1100kg. 96% power is 339 BHP(606.93 PP). 97% power at 343 BHP(608.03 PP).

 

[SM_Marti]

Deleted

 

[05XR8]

Based on the 1990 specs from ATCC Gibson Motorsport R31
Stock body, 17” wide wheels, wide offset

The R31 and RS 500 can go toe to toe blow for blow.

Adjusted the E30 SE to 1990/1991 BHP, due the rise in performance of the RS 500 and new R31 entering Group A.

The 240 works best in the early days of Group A. Setting the R31 to the debut four-cylinder non-GTS-R spec 340 BHP/1070kg, RS 500 to 360-370 BHP/1035kg, E30 non-evo 300 BHP, Supra 370 BHP, 190 E 260-310 BHP.
It just can not hang with the later spec cars.

Class C cars Same specs. Levin has a 557.18 PP versus Sprinter 557.16 PP due to the more slippery nose.

 

[05XR8]

Edit: Removed E36 and placed in Super Touring thread.

 

[05XR8]

A couple new entries from European Group A. Based on the DPM series Camaro and Mustang.

 

[OMY38]

Thank you very much.👌

 

[05XR8]

Matched the Natural Frequency(NF) of the RS500 and the rear is planted. Can induce oversteer and also “feel” when the rear is about to lose grip. Way more natural than before 1.49.

 

[StanNz]

Found a new issue today using RS500. After a crash I decided to park and watch the rest of the cars go by. I put my foot on the brake to stop the car from rolling and the engine began to rev and the accelerator segment on the hub started filling.
I tried both mercedes and BMW with no issue but all my Cosworths did it.
Has anyone else noticed this?

 

[05XR8]

Found a new issue today using RS500. After a crash I decided to park and watch the rest of the cars go by. I put my foot on the brake to stop the car from rolling and the engine began to rev and the accelerator segment on the hub started filling.
I tried both mercedes and BMW with no issue but all my Cosworths did it.
Has anyone else noticed this?

Cant say that I noticed that when I make spectating videos. Was the RS 500 in a gear other than 1st gear?

 

[StanNz]

Cant say that I noticed that when I make spectating videos. Was the RS 500 in a gear other than 1st gear?

Yeah but it would do it when I started a time trial then hit the brakes not just the spectating incident. I tried the other Cosworths and it did the same.
I checked my pedals and they were OK with other cars also.
Strange.

 

[Bobby-Vegas]

Based on the 1990 specs from ATCC Gibson Motorsport R31
Stock body, 17” wide wheels, wide offset
View attachment 1364418
View attachment 1364753View attachment 1364754View attachment 1364755

The R31 and RS 500 can go toe to toe blow for blow.
View attachment 1364760View attachment 1364761View attachment 1364762View attachment 1364763

Adjusted the E30 SE to 1990/1991 BHP, due the rise in performance of the RS 500 and new R31 entering Group A.
View attachment 1364765View attachment 1364766View attachment 1364767View attachment 1364768

The 240 works best in the early days of Group A. Setting the R31 to the debut four-cylinder non-GTS-R spec 340 BHP/1070kg, RS 500 to 360-370 BHP/1035kg, E30 non-evo 300 BHP, Supra 370 BHP, 190 E 260-310 BHP.
It just can not hang with the later spec cars.
View attachment 1364769View attachment 1364770
View attachment 1364771View attachment 1364772

Class C cars Same specs. Levin has a 557.18 PP versus Sprinter 557.16 PP due to the more slippery nose.
View attachment 1364774View attachment 1364775
View attachment 1364776View attachment 1364777View attachment 1364778

I'll be giving these a GO.. Do you have these Liveries shared? Thanks Bud

 

[05XR8]

I'll be giving these a GO.. Do you have these Liveries shared? Thanks Bud

I put the new Work wheels on the AE86

gran-turismo.com

Gran Turismo Official Website

www.gran-turismo.com

Volvo

gran-turismo.com

Gran Turismo Official Website

www.gran-turismo.com

I might have to share the R31 and RS 500 again.

Edit: Shared the liveries, but not appearing on my Profile.

 

[05XR8]

Updated op with JTCC Civic specs.

 

[05XR8]

Updated op with proper BHP/kg* for BMW E30 Sport Evo, Ford RS 500 and Nissan R32 GT-R from Australian Touring Car Championship 1990 & 1991 seasons.

*BMW E30 Sport Evolution still can not reduce weight below 983kg

 

[05XR8]

Updated OP with adding specs for the AE86 and tidied up some of the other cars.

 

[raziel363]

Hi @05XR8, thank you for your tunes. I'm currently trying to create a grid for custom races using the cars from this thread + the SWAP variations.
I noticed you did not post any Alfa Romeo 155 setup, do you have any that are on par with the others cars?

 

[05XR8]

Hi @05XR8, thank you for your tunes. I'm currently trying to create a grid for custom races using the cars from this thread + the SWAP variations.
I noticed you did not post any Alfa Romeo 155 setup, do you have any that are on par with the others cars?

Haven't run it in ages. I believe I set the bhp to about 270bhp. Setting the differentials to try and be closer to a BTCC FF 155:

Front 10/30/10
Rear 5/5/5

Transmission I think to top out at 255-265kmh. Here are some of my posts from April 2025 and from 2023.

Don't currently own one. When I used to, I detuned the Alfa to about 270-280 BHP, minimal aero. Can’t recall if I messed with the differential. However, what I’ve done with the Gr.4 4WD 4-door sedans(Genesis, WRX, Atenza) and 4WD road car to touring car builds(Evo III, IV, Celica) are these differential settings:

Front: 10/30/10
Rear: 5/5/5
Front Toe: 15
Rear Toe: 0

Makes it drive a bit more like an FF.

May 27, 2023
One setting, I tune as close to actual specs for the 1987/1988 Group A era.
370 BHP/1035kg PP 631-640 for Sierra
300/983 PP 617 M3.
Evo I’ll switch to 331BHP/983kg-1040kg PP 638-640 range. We can pump it up to 1991-1992 DTM specs at 353BHP
I’ll run R32 as JTCC Group A 554BHP/1260kg PP 660 range or ATCC 620/1500kg PP 670 range, as they couldn’t be touched in real life.
Supra can range from PP 630(370BHP/1132kg), in DTM spec to 550 BHP in JTCC Group A spec.

Another setting, I tune to Project Cars 2 specs.
R32: 500BHP/1260kg PP 646-649
RS500: 390/1039kg PP 636; testing one in the grid, at Max power, to see how it competes against the R32s
M3 & Evo: 320/983kg with f&r aero(M3) PP 632(without bore or stroke)



I’m fiddling with the AE86, as now we can add more power. Some ETCC specs had cars at 150 BHP and ATCC had more powerful cars in the 180 BHP range. We can run them up to 223BHP now. Same BHP as the current N2 widebody cars, in Hot Version videos: PP 610 with full aero on RH.
I’ve run my narrow bodies at maximum 199BHP/808kg and 150BHP/808 kg, PP 567 and PP 536, respectively.

Two other cars you can get away with using, Alfa 155 detuned to ‘87 Alfa 75 specs at 280 BHP. The Evo is competitive against it at the front of the grid. If you bury the Alfa deep in the field, it’ll usually stay down there.
The other are the ‘88 & ‘90 Silvi’s. Until we see the ‘87 R31, they make good RWD competitors for the AE86 or tuned to battle the M3s and Sierras.

To add, all my cars use Racing discs and pads on RH.
AE86s use two-way diff, all other cars full custom diffs.