what is better and why, slotted or drilled rotors????

what are the advantages of both?

 

I think drilled are better overall for breaking power because of the cooling efficency the holes create. But I know with some of the older drilled rotors, they cracked over time no matter what you did to prevent it.

 

I half read a 2-3 page article about this. Basically it said all the slotted/drilled brakes are good for is a bit quicker cooling. If you get one thats slotted/drilled/both like crazy, it'll crack real quick. I'd get one with a few drilled myself, however whichever has teh biggest surface covered by the pad and caliper is the best way to go altogether for break performance. Its weird the way they are engineered...the way I've heard it, you could have a generic 9.5" brake but have (lets say for this example) a Brembo with 9.0". The 9"er may brake better. My Passat's brakes are really nice, one time I looked at the front ones. Average to a-bit-bigger sized, but the actual pad (although probably a 4 piston) was huge!

If I could, I'd go with a dual caliper setup. I just think thats cooler. Pet peeve of mine when someone gets bigass wheels but has stock brakes, it just doenst look right at ALL.

 

If your car is over 3000 lbs you should stay away from drilled rotors. They will crack - and a crack can lead to a catastrophic brake failure. Gas slotted are typically better for heavier cars.

Size of pads typically has little to do with stopping distance. at a certain point it doesn't help you stop any faster. The rotor size is typically what dictates whether you have fade or not. The larger the size, the better the heat sink, the less likely to boil your fluid, the less likely to have a spongy pedal.

 

for a ford focus would you what type of pads would be good.. should i get drilled/slotted rotors

 

id get dimpled rotors before drilled.

 

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Drilled have been known to crack. Do not mistake Porsche or Ferrari as drilled. They look drilled but they are actually casted with the dimples in them, big difference.

The main purpose of the slots/dimples are to allow brake dust to escape as the pad is pressed against the disc.

Cooling advantages come from the fin design between the disc. Something street cars don't have and don't need. Nor do they need slots or dimples.

 

just stick to better pads, a high temp brake fluid and some stainless steel brake lines, you should have no problem with fade, unless you constantly go 100+mph and slam on the brakes

drilled, slotted etc. are just for the pimp factor on a street car....want pimp factor? go ahead, but its alot more money than just pads and fluid