After reading all the posts about new brakes, chips, short shifters etc was wondering if all these are easily reversible and what impact they have on resale value and warranty. I must admit I would steer clear of an M5 with these mods as I would assume it had done lots of track time. Any thoughts?
I don't see a problem with other brakes, exhausts, spoilers or additional stuff like radar warners. Were I wouldn't buy an used car is when it's chip tuned, because this has definitly an impact on the engine lifetime.