^ uh huh. well then you been owned by GM.

My manual:

This vehicle is designed with an Electronically controlled braking system. Equipping this vehicle with aftermarket wheels changes the specifications that the system was designed to operate and will reduce the vehicle braking ability.

Then again, what do they know? They have only been designing cars for 75 years with the collective knowledge and wisdom from more than a century. There not a more sure way to make yourself look dumb than to say that stock parts can stop that kind of mass with less than half the original leverage.