nah, different hubs shafts brakes etc, like karl said, "yes there is a difference"Sounds like, they have the same brakes.
The top speed and weight logic applies to most cars. Uprated versions such as the st will have an uprated set of brakes to compliment its track pedigree:S oh...but top speed+weight... i thought the st has a topspeed of 160km/h and near the same weight.