Quote Originally Posted by G_Match View Post
Boxster / A8 setup upfront increases stopping distance? I don't think so.. it might not decrease stopping distance by much but definately doesn't throw the bias out enough to increase it.
Much better response and control when threshold braking with the stiffer 4 pot caliper
More heat capacity from larger rotor
Definately worthy mod. To balance the rear rotor though you can do the 255mm (stock 245mm) rotor upgrade with b6 carriers. The 3.0lt B6 comes 312mm F 255mm R stock..

They will increase stopping distances. They have larger/more pistons and generate more brake torque than stock given the same line pressure. So when the fronts are doing their thing the rears are left with less pressure than normal and do correspondingly less work. This may only be an overall braking power decrease of a few percent but it does increase stopping distance.