Like everything else, there are advantages and disadvantages to drilling and slotting a rotor.
So why do all those high dollar cars like Ferrari, Lamborghini and Porsche have drilled rotors?
When youre on the brakes and theres a pulsing sensation or vibration, we typical call this situation warped rotors.
Exceeds all conservation objectives, plans and requirements.Many people and advertisements claim that cross drilling helps the rotor cool.If you ever go to the track and find someone pushing a car hard that has cross-drilled rotors, put your ear near one of his wheels and listen carefully when he gets back to the paddock.So what about slotting?You will hear small metallic pings and pops as the rotor cools unevenly.Some rotors have many more holes per inch than others.The results are the same when pushed hard.I suppose you could drive beat the bandit slots through a puddle with very hot brakes and cause a permanent measurable change, but it must be rare.If I have my rotors resurfaced, will that fix the problem?But either spil dansk ordbog way, the initial bite tends to be better in the wet.
What does happen is that the layer of pad material on the rotor surface builds up unevenly, and also, the metallurgy of the rotor can change states.I have even mistaken this vibration as my tires being out of balance.So what really happens when the rotor is warped?Cross slot products are most popular in North America, Domestic Market, and Western Europe.Drilled Slotted Brake Rotors.When the pad is overheated, it can leave large visible deposits on the rotors surface.
But if you look at any serious professional race car today, I would be shocked if you found any cross-drilling.
Im sure those little holes do help the rotor cool in some regard (possibly not measurable but the effect in reality is completely insignificant.