Original car by SMS (Project CARS), ported to AC by [?] Whoever it was, you are legend!
Latest Edits:

v2.80 by Pfalzdriver & DaWallace

- added KsperpixelNM to FL reflector's (Mr.Hunt @GTP)
- added highres front light textures (Mr.Hunt @GTP & DaWallace
- added AI tyres
- added correct STACK gauge & adjusted rpm arrow
- added new engine detail texture
- optional "extension" folder and new lights.ini from Johnny23 (Mr.Hunt @GTP)
- optimized selflight
- refraction overhaul

v2.60 by Pfalzdriver & DaWallace

- Changed driver shift animation (thx to masscot)
- Added interior center mirror
- Added "performance 2k skins" folder (optional)
- Reworked exterior materials and shader
- Added new interior textures
- Added skin templates for wheelcover and steering wheel
- Added wheelcover templates (wheelcover A & wheelcover B) *
- Added folder with tyre textures
- Reworked refracting headlights and taillights *
- Extended Physics/Rain tyres *
- Reworked car physics
- Added new LODs
- All lights reworked in 3D model
- New damage and dirt textures, credits to RealAKP. A big thank you for those
- Reworked light settings *
- Changed impact damage at the rear
- Replaced skins with skins from Johnny23 (Mr.Hunt @GTP) - Racedepartment (readme file with further credits and links)
- EXTRA-A: Fog lights (and the extra of the fictional skin) *
- EXTRA-B: Interior light *
- EXTRA-C: Drivers door *
- EXTRA-D: Co-Drivers door *

* CSP required

The BMW M1 (E26) is a sports car produced by German automaker BMW from 1978 to 1981.
In the late 1970s, Italian manufacturer Lamborghini entered into an agreement with BMW to build a production racing car in sufficient quantity for homologation, but conflicts arose that prompted BMW to produce the car themselves. The result was sold to the public, from 1978 to 1981, as the BMW M1, at the time the only mid-engined BMW to be mass-produced.

In 1979 the head of BMW Motorsport, Jochen Neerpasch, devised a one-make championship using racing modified M1s. The series was created to aid BMW in building enough M1s to enter the Group 4 classification in the World Championship for Makes. The new series, known as the Procar BMW M1 Championship, served as a support series for Formula One, and included many current Formula One drivers in identical cars.

The series ran for two years, with Niki Lauda winning the 1979 season, and Nelson Piquet the 1980 season. After BMW met the standards for Group 4, the Procars were used by various teams in the World Championship as well as other national series.