Can slotted and/or cross drilled rotors be turned? If so, do shops usually charge more to do it?
TitanBlue said:HIJACK: (Excellent Technical Thread BTW) When looking at the Drivers side of a Drilled Rotor, should the holes at the top be pointing/leaning/arched forward or backwards? Somebody have the absolute correct answer?
Mine are pointing/arched backwards at the top, but work fine. Thank you.
It may also depend on how they are drilled. When I placed my order, the guy actually called me to learn my needs(I know, I was shocked too!). Once he talked to me, he recommended smaller holes, so that is what I went with. He said that they'd be stronger and less likely to fatigue from heat stress. He may've been blowing smoke up my (.)GregP said:From am old road racer, cross-drilled rotors are not recommended at ALL except for drag racing. If you go road racing with them, they crack when they overheat.
Cross drilling is neat for looks and for drag racing where a short braking experience is all that is needed. But if real heat dissipation is required, stick with slotted rotors and forego the cross-drilling.
If you tow a heavy trailer and have cross drilled rotors, they WILL crack eventually due to heat-induced stress.
Just my 2-cents worth.
Everyone has their own standards and cross-drilled rotors are fine for people who do not tow or expect a lot of brake performance after the first few hard stops. If I lived in mountains, I'd avoid them like the plague, but desert flatlands might be just fine for them, assuming no heavy towing.