rFactor 2

rFactor 2

363 ratings
Group C Mod v1.1
File Size
810.792 MB
Dec 23, 2015 @ 11:37pm
Feb 7, 2019 @ 5:25pm
5 Change Notes ( view )

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Group C Mod v1.1

The 1991 Group C mod includes the Mazda 787B, Porsche 962C and the Sauber C11 in the latest version of the mod for rFactor 2. Featuring unique realistic physics for each vehicle as well as different tire compounds, this is your chance to get behind the wheel of the three most iconic racing cars in the history of Group C racing.


- 1991 Mazda 787B
- 1991 Porsche 962C
- 1991 Sauber C11
- Unique physics for each vehicle
- Unique engine sounds for each vehicle

Mod Resources

Templates: Download Click HERE[www.mak-corp.com.au]
MOD PDF MANUAL: Download Click HERE[www.mak-corp.com.au]


Join the MAK-Corp Steam Group Here
Visit our Website Here[www.mak-corp.com.au]


MAK-Corp Group C Mod v1.1
- Removed inside double skin 3d mesh for all cars bonnet glass - with new shaders since last update, is no longer needed.
- Fixed dark side windows on 787b, now looks like other cars.
- Animated wipers added to 962c and C11.
- All wipers are fully operational and clean glass etc.
- All windows for all cars re-exported with new uv for rain.
- Rain on all car bodies/banner has been added and water direction movement configured as well.
- Re-exported all car liveries with removed wiper shadows inside them because they now move and look wrong.
- Edited and re-saved the Templates pack with all car changes if templates are wanted by you guys.
- All cars have new backfire instead of old backfire - thanks s397.
- RPM light added to 787b.
- Lods made and added for all cars.
- Improved mirror mapping on all cars

Rain racing - Please disable reflections in-game when racing in rain due to reflections in wet weather not working correctly on windscreen areas outside of the wiper clean area and because these windscreens have a lot of non wiper area compared to most due to windscreen shape, therefore making it more visible.

Apologies for another template change, it was un-avoidable and had to be done to accomodate rain support properly.

Manual Documentation updated to v1.1.

All Cars - Added aerodynamic upgrades to force AI run different setups on certain tracks

Mazda 787B
- Revised slick tyre's grip loss on rain
- Revised heating of wet tyres on dry condition
- Revised clutch torque on shifter to avoid abuse on downshifts
- Revised grip on AI front tyres
- Revised FFB options on upgrades
- Removed blip sound while using shifter (again)

Porsche 962
- Modified WSC turbo hitch for better handling
- Revised fuel consumption for each turbo step on both engines
- Revised slick tyre's grip loss on rain
- Revised heating of wet tyres on dry condition
- Revised clutch torque on shifter to avoid abuse on downshifts
- Revised FFB options on upgrades
- Rob Wollek added to car #86

Sauber C11
- Increased drag and fuel consumption
- Reduced engine life and increased damage when revving over 7000rpm
- Increased dry tyres grip in the wet to be balanced against the other cars
- Improved AI drivers suspension and performance on different track conditions
- Revised FFB options on upgrades

- Improved interior engine sound L/R balance
- Updated Porsche 962 turbo sounds
- There are 4 exterior engine sound variants for Porsche 962 (1 for WSC, 3 for IMSA)


- Mod Production Manager: Petros Mak
- Mazda 787B 3D Vehicle by: Ionut Nicolaescu
- Mazda 787B 3D Vehicle Updates by: Dmitriy Barishev
- Porsche 962C 3D Vehicle by: Dmitriy Barishev
- UV Mapping Mazda 787B by: 1st set by: Bernd Boehm. Re-Mapped by: Lukasz Kacprzykowski
- UV Mapping Porsche 962C by: Juandi Sanchez
- 2D Textures by: Doug Parker, Nigel Phelan
- New Skins from v0.95 by: Arturo Pereira, Damian Baldi, Daniel Gomez
- In-Game Specialist: Liquid4653
- rFactor 2 Physics 787B, 962C by: Damian Baldi
- rFactor 2 Physics C11 by: Alvaro Perez
- Sounds by: Alvaro Perez


All vehicle brands, series brands, team and driver logos, liveries and other replications placed in this mod from the real season are proprietary property of their respective owners. All rights reserved. MAK-Corp does not have nor claim to have any affiliation with any brands, teams or drivers that are represented within this mod unless stated otherwise.

All aspects of this mod are copyrighted material of MAK-Corp and should not be used in any way, shape or form without express prior written permission from MAK-Corp Management. If you wish to use this mod for any reason, please contact us at accounts@mak-corp.com.au
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strava Dec 15, 2021 @ 8:26am 
The wipers and rain effects are not working for the Porsche or Sauber. Mazda is ok.
Anyone else have this problem?
berarma Aug 24, 2021 @ 1:53am 
Great mod. Just one thing to bring to your attention.

This mod is trying to install these files besides the mod itself and they fail to install:

ReaperNZ Jul 24, 2021 @ 11:23am 
@Dongwoo Kang , i had this issue & deleted the player.json file & had no more issues but did have to resetup options which took bout 1 min :)
ReaperNZ Jul 24, 2021 @ 11:19am 
you guys do such an amazing job with these cars , top job ... maybe a future idea would be to add the nissan then the pack would be complete :D
MasterN00b22 Jul 1, 2021 @ 6:01am 
This is SO GOOD
Bertram Raven Apr 16, 2021 @ 3:36am 
I'll be racing these this Sunday - very tricky to balance, but rewarding when everything starts coming together.
addrum Mar 16, 2021 @ 1:09pm 
Just been using this mod on Sebring and with the AI at 97% (which we can comfortably beat in GTEs) they're about 9 seconds faster, is there some setting we need to tweak or is it just another case of needing a specific difficulty setting for this combo?
Vulture Feb 27, 2021 @ 5:09pm 
Best mod!
Maverick Feb 16, 2021 @ 5:06am 
Was looking for 787b and found the whole group c, thanks a lot for the amazing work man!
goldtop Jan 18, 2021 @ 8:25am 
Really enjoying these cars...so much more drivable and believable than their AC equivalents. They don't seem to be BOP'd with the Mazda seeming to be a little quicker than the Sauber, with the 962 somewhere in between them. Fine by me as the cars differed IRL.

My only small gripe is the range of adjustable seat height in the cockpit view of the Sauber. I've tried adjusting the in game controls and even tried editing the values in the plyayer json file but I'm still sitting too high which is a bit of an immersion killer for me. Maybe something that could be fixed easily?