Re: M3 vs. Boxster Remove the limiter of the M3 and you'll get approx 280 kmh/174 mph topspeed. Mate o'mine got a BoxsterS and it's an amazingly sweet-handling car, I really love the way you can push it hard into corners and stand on the brakes later than anything. I must disagree with the braking-figures though, the BoxsterS has in ALL tests I've ever read shorter braking-distance than any other car, ~34,5-35.1 meters whereas the M3 generally takes ~36.1-37.2. Generally accepted among all pro-tuners is that if you want the best brakes there is, get the ones from the 996/Boxster-S(normal boxster has crap ones) which are actually made by Brembo. Noone's ever taken brakes from the M3/M5 when wanting an upgrade, go figure.