Thread: Best drill and slotted rotor.

I got a set off of eBay for my 98. They work fine. Stop fine. No warping. I know a lot of people look down on them because they are made in China, but, most off the shelf OEM type rotors are made in the same factories with the same materials/machines. I see nothing wrong with them.

Originally Posted by TwiztdWun

I got a set off of eBay for my 98. They work fine. Stop fine. No warping. I know a lot of people look down on them because they are made in China, but, most off the shelf OEM type rotors are made in the same factories with the same materials/machines. I see nothing wrong with them.

The problem with those are they are actually drilled. They have a tendency to crack.

Exactly if anything just get some high quallity slotted. But rockauto does have some drilled/slotted for real cheap.

Originally Posted by SnowFlake

The best drilled rotors are the ones that aren't drilled.
I'm sure you're aware that the holes are negative for performance.

I have to completely disagree... If they were soo bad for performance then they wouldnt come stock on the REALLY high dollar cars. The key is to find ones that have been cast with the holes in them and not cast then drilled.


I run R1 Concepts and I love them. I have put about 40-50k on them and have ZERO cracking and I use my brakes hard sometimes.

This is just a good cross section. Maybe there is more to the drilled thing then you thought?

Technically its for heat dispersion and causes the rotor to warp less under extreme conditions and keep the pads from glazing but as far as stopping you faster it does the opposite because the pad has less surface to grip.

Less surface is offset by the fact that you get less brake fade and better heat dispersion.

Also depending on if you run semi metallics or ceramics. Semi metallics are better stopping power for the average person but under severe conditions will glaze and lose stopping power and thats where ceramics come in. Ceramics are alot harder of a pad and dont really melt down under heat but put alot more heat into the rotor causing warping so the drilled(machined) rotors are a better option. But as far as stopping the fastest if your not counting heat semi metallics with your standard rotors are the best.

I run Carbon metallic pads with the R1 concepts drilled and slotted rotors. And once they are warm it is a MUCH better stop then stock.

Originally Posted by Iceman6669

I run Carbon metallic pads with the R1 concepts drilled and slotted rotors. And once they are warm it is a MUCH better stop then stock.

Yea thats because the pad meterial will seat into the rotor and basicly cause it to be pad on pad. What i do is get up to like 80 and stand on my brakes to a direct stop. Do this like 4 times and it causes the rotor to get so hot that it will melt the pad embedding it into the rotor so instead of pad on metal its more pad on pad if that makes sense.

That my friend is common sense. While there is less contact area there is in fact MORE surface area and THAT helps with heat distribution.

The holes in the rotor will act as a heat sink too. The more surface area you have the more cooling effect it has do to more contact with the cooler air. Same principle any heat sink works off. I will concede that it does take away from contact surface, that effect is offset by the cooler temps and less fade.