Brake rotor question

I was planning on getting some new rotors like drilled or slotted. I was just wondering if they help reduce stopping distance by alot or just a little??

In all honesty not much at all. Slotted and Cross Drilled werent made to stop faster they were made to VENT the brake pads for extended uses.

For example, if I am on a road course that is 2.5 miles and I am braking a lot I need my pads to cool down quicker. That is their intended use. They dont stop any quicker....

If you want better stopping distance over stock discs with cross drilled and slotted rotors, you'll have to get oversized discs. Drilled + Slotted = Less surface area = less friction between pad and rotor = greater stopping distance unless they have a larger diameter to compensate.

Cross drilled rotors are plain and simple, the worse thing you can add to your brake system. They are weaker, generate MORE heat than stock, and warp and crack very prematurely. Please read and check out http://www.automotiveforums.com/vbulletin/showthread.php?t=85221 (all 8 pages of this link) for the best explanation on this entire site, of why cross drilled rotors are bad news.

i have a feeling this is gonna be one of those posts thats gonna have a big arguement about cross drilled vs slotted. IMO i agree w/ brokenlimits. It is only ment for braking endurance needs. Since it cools faster... it will probably prevent rotor warpage

i have a feeling this is gonna be one of those posts thats gonna have a big arguement about cross drilled vs slotted. IMO i agree w/ brokenlimits. It is only ment for braking endurance needs. Since it cools faster... it will probably prevent rotor warpage

If you look t the rotors on a TRUE race car like a Formula1 Indy car, or even a NASCAR stock car for that matter, they all have one thing in common, smooth faced blank rotors. Indy and F1 cars might use ceramic or carbon kevlar rotors which resist heat greatly, so drilling those would just take away from overall brake performance. NASCARS use the same type of rotors that come on your car from the factory, though in a 2-piece floating disc version which will dissipate heat MUCH better than a one-piece slotted or drilled rotor will. F1 cars might actually use slotting marks on their rotors to aid with cooling, but NONE use cross drills.