However, as the mass shifts towards the back, the stability goes away under braking and any uneven braking surface makes the car want to swap ends. (mechanics.stackexchange.com)
Perforated and ventilated, these have gray cast - iron braking surfaces and aluminum hubs, again to reduce unsprung and rotating mass. (automobilemag.com)
To be certain: look for scoring or other damage to your braking surfaces — that is, to your... (mechanics.stackexchange.com)