cross drilled vs drilled and slotted

[b20a86lude]

ok i have power stop cross drilled rotors on my car with aem brake pads and cross driled and slotted in the back so im gonbna have a 350 hp motor in by next yr my friend was telling me 2 days ago that i need to throw away my front rotors cause they wont put up to the all that horspower and i need the slotted rotors so it will stop and grip better he said that arent very good the crossdrileld oned what do u guys think

[NXRacer]

i think your friend is right. Drilling all those holes causes a loss in surface area which reduces your ability to stop fast.

Slotted gives you the best bang for your buck. The slots help dissipate the gasses that build up between the rotor and pad that cause loss of braking. As long as you get good rotors (like brembos) you won't have to worry about them overheating too much because they're really good at dissipating heat.

Some people will tell you that cross drilled are the best way to go and others will tell you they dont work as well. i know a few guys who auto-x on the regular, and they always suggest going with slotted as apposed to crossd drilled or CD/Slotted.

if you're going to have 350 hp,you might want to look into getting a big brake upgrade. that will help more then anything else will.

[Busted_Blue]

What I am confused about is that Porsche has crossdrilled rotors stock...


I am with NX racer and big brake setup would be the best upgrade.

[NXRacer]

What I am confused about is that Porsche has crossdrilled rotors stock...

yeah, i know. and so do all the indy cars and stuff. I think it might help in a lot of high speed heavy braking, but i dont know if the accord is capable of putting the brakes to the kind of torture that would warrant cross drilled brakes. thats just what i've read and heard.

[geesnow]

cross drilled is more prone to crack!! i PROMISE!! Had 'em on my mustang.

[Busted_Blue]

cross drilled is more prone to crack!! i PROMISE!! Had 'em on my mustang.

Tell that to porsche! Quality brand names make a big difference when it comes to cross drilled rotors.

[Justin86]

yea some good crossdrilled/sloted rotors will cost you an arm and leg. The main reason they are used is for heavy/high heat use and it helps to reduce the weight as in racing or your 100,000 sports car that also come with 4 piston calipers. With our calipers sloted is the most you want and they don't compromise the strength of the rotors. Get some bigger brakes is what I highly recomend, they are one of the best upgrades I have ever done and I tell everyone to do it.
If you gonna have wheels 16" of bigger might as well have brakes that fill them up.
Oh and they improved my stopping distance from 190' to 124' with front and rear big brake kits.

[b20a86lude]

wekk theres one problem im not goin past 15 inch rim so whats the best i can do then i hate albsotly hate 16s 17s 18s well get the idea

[Busted_Blue]

I think 16inch rims are the most optimal for our cars. 205/45/16 is hot.

[Justin86]

there is nothing wrong with bigger wheels, you just can't get as big of side wall and beside you will have the power to turn them.

[3gn86lxi]

I think 16inch rims are the most optimal for our cars. 205/45/16 is hot.

I agree, I'm running 205/40R/16 Falcon Zexius Xi326. And I really like em.
You still have enough power to move them, and stopping is o.k. I am going to upgrade to slotted and drilled zink plated rotors.

[Busted_Blue]

now to throw up a link about rotors to setting it once and for all.

http://www.teamscr.com/rotors.htm

basically sum it up.

Cross drilled = doesnt cool down brakes.
Slotted = does.

Crossdrilled on popular setups because it reduces rotor mass.

Crossdrilled = less weight.
Crossdrilled + slotted = compromise of the two. Lighter rotors + better braking but not as good braking as only slotted.


That article really cleared it up for me. Hope it helps another fellow.