Cross drilles and slotted rotors,

[iCryWheniGoPoop]

After typing that out I did a Google search on "cross drilled rotor cracks" and got about 1000 pictures of the exact issue I had so I'm thinking that's it's not uncommon and many of the pictures show the rotor split in half.

[SouthernSilveradoGuy85]

I'm a huge NASCAR fan and I believe even on high braking tracks they only use slotted rotors. I'll take better calipers and pads with a smooth plain rotor over drilled rotors. I wouldn't get drilled rotors just for looks. Sometimes not getting or doing something just for looks is the best thing to do.

[ccdies]

After typing that out I did a Google search on "cross drilled rotor cracks" and got about 1000 pictures of the exact issue I had so I'm thinking that's it's not uncommon and many of the pictures show the rotor split in half.

I didn't think about google image,, I'm gonna do that now,, thanks

 

 

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[ccdies]

I did have cross drilled and slotted rotors on my 03 Mustang GT, and slotted rotors on my 07 Saleen SC281 and 09 Shelby GT500, I've had no problems with them, but I bought the cars with them,,

 

 

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[Spurshot]

They help for very hard braking, especially when loaded heavily or from high speed, where you're on the brakes hard for more than a couple seconds.

 

Slots, dimples and holes provide a gas break.

 

I put some EBC slotted and dimpled rotors on the front of my 2008, because they were warped and although I turned them once, they warped again. I never had any problem with those rotors and they ran true. The rear OEM rotors also warped again after turning. But not near as bad.

 

My 2014 has Wilwood 14.25" drilled rotors and 6 piston calipers in the front. If you like to drive with the windows down, you can hear them a little...unless you have an aggressive tire. Better braking is always a good thing.

[Spurshot]

My opinion of the OEM 2008 model year rotors was that they were poorly made Chinese parts, comparable to aftermarket Chinese rotors. That's what drove me to buy the EBC rotors. I didn't know what to expect with the EBC rotors, but it turned out they were made in the UK and they did not warp.

[ccdies]

 

For how cheap they are I guess I can buy them and try them out

 

 

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[MikeNH]

Everything I wrote about these rotors being useless was referring directly to cheap junk like that. Good luck.

[DanY]

From what I have read in the past, cross-drilled rotors work fine if they are properly manufactured.

Just drilling the rotors produce stress points where the cracks begin. I think if they machine a chamfer

at the top of the hole, it relieves the stress point and prevents cracking. Not sure if the chamfer is done

before or after the rotor is drilled.

 

Of course you need to spend the money and get a quality rotor from a reputable manufacturer if you want

it to last.

 

I would love to put a Wilwood 14.25" brake system on my truck but total cost for front and rear is around $4K.

Sure would look sweet in the 22" Rally Edition wheels.

[ccdies]

So. Don't get the cheap ones, Got it,

 

 

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[Chris]

Cheap ones and even drilled ones from a parts house, my old ones came from Car Quest, will start to crack around the holes

[Clocked92]

I always thought that cross drilled rotors were specifically for high heat applications to help the rotors cool faster and reduce brake fade. On a sports car on the track this makes a big difference after a couple hard brakes when going into corners.

 

On a truck, I don't think they'd make that much of a difference unless you're going down mountains regularly. I've looked at brake kits for my mustang and some are drilled and some aren't. No matter what, they are like $2-3k for a good set.

[RobZ71LM7]

You're wasting your money just get a better set of pads. Modern pads do not outgas and don't need drilled rotors. To those in the know they are just an outward sign of the owner's ignorance or their proclivity towards driveway jewelry over performance. ;)

 

http://www.wilwood.com/M/techtip/TechFaqAnswer.aspx?id=8&no=2

[Strykers_Inc]

You're wasting your money just get a better set of pads. Modern pads do not outgas and don't need drilled rotors. To those in the know they are just an outward sign of the owner's ignorance or their proclivity towards driveway jewelry over performance. ;)

 

http://www.wilwood.com/M/techtip/TechFaqAnswer.aspx?id=8&no=2

 

To those in the know!

 

And this is why they sell them too, and make the same claim as stated before. Improves breaking.

 

http://www.wilwood.com/M/Rotors/RotorLanding.aspx?app=35&rt=0

[Strykers_Inc]

Oh and by the way, in NASCAR they use OVERsized plain rotors in leiu of drilled or slotted in order to increase surface area. I stress the term OV ERsized. They dont worry so much about overheating because of the size of the rotor and the fact they have blowers to funnel air directly to the rotor and caliper.

 

YEP, huge NASCAR and NASTRUCK fan right here!