Thread: Best brake job ever.

I'll stop worrying about it, thanks for your input.

I think I understand your question. The 12" rotors are not made larger by increasing just the braking surface width. The center area of the rotor is increased in size as well so the actual braking surface is the same width, just a larger diameter. The caliper, brake pads, brackets and rotors that I run now are all standard parts from GM installed together on certain GM models other than the Grand Prix.