The M3 GTR used a V8 derived from the M5. Porsche complained that while the engine specifications were technically legal, the fact that no roadgoing M3 had this engine should bar the M3-GTR from GT class competition (where the cars are supposed to be close to stock in terms of the chassis, engine, and drivetrain). BMW did their best to adhere to the new homologenation requirements, producing about 50 road-going versions (I think) of the M3 GTR (each listed for over $250,000). The rules were changed even further to disallow this. It was proposed to BMW to run the car in the GT-S class, but there is no way the car would have been fast enough to compete against 7-liter Corvettes and Saleens. Consequently, BMW decided to discontinue their ALMS/Le Mans participation in 2002. Sad really; the M3 GTR was a glorious machine that I never got to see in person (I missed the 2001 ALMS race in Portland
![Sad :( :(](/wp-content/themes/gtp16/images/smilies/cry.svg)
). It also began Porsche's dominance in the GT category, since they systematically eliminated their only real competition. Hopefully BMW has something in the works to return, as their absence from these competitions has been sorely missed. Perhaps since the new M3 will have a 400hp V-8, they'll come back?
Also, my C5-R is the 2002 Goodwrench-sponsored version (#4) driven by Andy Pilgrim and Kelly Collins, made by AutoArt. It's a stunning model