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Originally Posted by pecivil
so what I am hearing is that Porsche, Lambo, Ferrarri, etc put stock drilled rotors on just for looks, and a solid rotor is better.
I understand the logic as to why drilling has its problems, but I really hate to believe porsche puts drilled rotors on a GT-3 strictly for marketing, when solid is better.
Hummmmmm.....
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check out the ones they actually race. earlier in this thread is a photo of a GT3 RSR. solid rotors. cross drilled were all the rage for awhile, but time and experience have shown that in racing applications, there are better ways to go. for the street / light track, drilled rotors are fine & they look cool. in terms of performance, they're simply not the best option.
porsche986spyder:
check your measurements. a rotor that's 1.25" in diameter larger than stock will hit the caliper. even if it COULD fit, your pads wouldn't sweep the outermost portion of the rotor. also, the largest sports car rotors i'm aware of are 15.7" / 400mm diameter. a 17" / 18" disk w/ caliper won't fit inside the wheels. not to mention the inertia starts to really work against you when you go too big on rotors.