I need new brakes despritely and wondering if drilled and slotted are the way to go? Just slotted heard that drilled rotors crack easy? Or are they just a waste of money. Only go to the track like once or twice a month and pretty much a week end car no road racing besides the ocasioinal 160 on the highway.


Where would you find them cheap? Also looking for ceramic pads?
Any suggestions always appriciated

 

The purpose for the drilled/slotted areas is to vent the buildup of gas. They wouldn't be needed in most cases, such as yours; you would be fine with solid rotors. Although, they do look good if you have wheels to compliment them and nice calipers. They are cheap enough (eBay), so if you have the extra green I'd say go for them.

 

I got them on my last car.......... BEST $$$ EVER SPENT!! (Power Slot/ slotted+dimpled)

Once they are broken in, mostly no heavy braking over 60. They grip like CRAZY! Of course the car's brakes were awesome to begin w/. The camaro's brakes do not impress me, mine at least.

 

Go ask this question over at frrax.com and get some real track tested answers from guys who actually road race/autox their cars...heres what you'll find out:

1. Modern pads DO NOT outgas, therefore drilling rotors serves no function other than to reduce the amount of rotor mass to dissipate heat (the point of bigger rotors is better heat dissipation), and thereby reducing performance.

2. Slotting rotors is only useful in the rain, as each slot will cut a fresh layer onto the pad, keeping it dry. In dry weather, the slots act just like the crossdrilling (less mass to dissipate heat), with the added bonus of wearing out your pads quicker!

3. Almost all cross-drilled rotors are prone to cracking, as the holes create stress risers in the rotor. Porsche rotors have their holes cast into the rotor (instead of just drilled), which is the only way cross-"drilled" rotors will not crack eventually.

4. Of all those over at frrax.com who have done their research and track their cars, 99.9% of them use blank rotors. Slotting and crossdrilling are cosmetic enhancements only, and people who want the best performance generally use blanks.

5. People who tell you that their car stops so much better with the slotted/crossdrilled rotors are the same people that tell you they could feel a big difference with their TB airfoil They are feeling the stopping improvement that comes with the new pads they put on with the new rotors

In short: If you want to look cool, get them. If you want to perform the best, get blanks.

 

What sandman said is on the money, good advice.

Z28

 

Ditto Sandman...almost.
Slotted can crack also. IF you HAVE to have them, get ones that do not run the slot all the way to the edge.
I've read several threads where Porche rotors are said to be drilled. They're just drilled on the vanes instead of in between. I personally don't know or really care, just giving more info.
Usually the big difference people feel in their braking is due to more agressive pads, not the rotors.

drilled/slotted = driveway jewelry.

If you REALLY want to stop better, RUN GOOD TIRES!!!! Do not get the least expensive tire you can find.

 

Thanks sandman very good advise. I had heard that from a couple of other sites and just wanted to confirm it. I like how you gave alot of info to clarify unlike some people that put "there awesome and I saw a night and day difference" I love to research all my parts before wasting the money on them and you made my job alot easier. Thanks

 

werd



Slotted/cross-drilled do look nice tho! Good luck

 

I think it's worth reiterating that in addition to not using drilled rotors, the point about quality tires is important. The tires have to have bite!

 

regardless of wether the hole is drilled or cast into the rotor, the 90 edge is a stress riser
that stress riser is significantly reduced if the holes are chamfered
giving them two 45 degree edges instead of one 90 degree edge

but other than that
you're right on the money
solid rotors are better for performance

 

I've had drilled/slotted over 2yrs. and its been one of the best things i got. I used to warp the regular discs all the time... The performance has been about the same maybe a slight better.... i drive the car hard and brake often.. i guess it might depend of which one u get.....

02 Camaro SS A4