Don't get me wrong.....the M5 is a fantastic car, and I'm really pleased with it. The main problem is that BMW Motorsport, didn't leave much for the Petrol Head in us, to improve on. Brakes are the achilles heel of the car if you want to do the odd track day. Suspension is Ok, but can be improved on. Exhaust system is quite restrictive, and the easiest way of releasing quite abit of power (Relatively Speaking)...which leads on to a re-mapped ecu. No big gains to be had like on a Cosworth, but an improvement over standard which will take you to a genuine 420bhp. The nice thing that I've noticed is the instant throttle responce, after driving any cosworth (Even a standard one) the return to a powerful naturaly aspirated car is rewarding. I do miss the surge you get from a turbo though.

It's these two pics that keep me lovin the M5 though........





Decisions Decisions......Non made yet, I might still take the plunge and upgrade the brakes, Suspension, and Exhaust System, but it's so damned expensive......5k to get it stopping properly, handle slightly better, and a 20bhp power gain......I could build a 400bhp cossie engine for the same price......

I guess I'm just missing that tinkering around that you do ("Have to do") with a Cosworth.