I was washing my car today for the first time in a long time and I noticed the rotors are looking like ****. They are seriously grooved. I can't imagine how a new, flat brake pad would make much contact with the rotor until it became shaped. ALSO, there are several cracks forming from the vent holes on the fronts. Is this normal???

Thanks, Mike

 

Totally normal. Those don't look too bad yet. The time to change them is when the holes get connected or the cracks reach the outer edge.

I recently upgraded my brakes (rotors, pads, fluid). Here's what my old rotors looked like after 7k miles and about a half dozen track days:

 

I fully agree. No need to panic. Yet.

Greetings,
--Pierre

 

Slow down Mike!....stop using the brakes so much...lol

 

I had decided to stay with the OEM brakes. Looks like an opportunity to upgrade is presenting itself . Do the aftermarket big brake kits hold up any better?

Mike

 

Its a problem when they cracks connec, or meet the outer edge of the rotor. Until then you are ok..

 

Zippy: The StopTechs are superior to the stock rotors. I think the biggest reason is they are bigger and slotted instead of drilled. Almost no road race team uses drilled rotors as they drilled holes are stress concentration points and they will prematurely crack. As Fabryce and others have said, yours are fine. For comparison, my stock rotors lasted three track days. My StopTechs lasted over a dozen. I am very tough on brakes.

 

They just replaced my rotors under Wty. I had the same cracks but they were also warped. I was told the cracks weren't a problem but they replaced both fronts because they warped. The tech said just so long as the cracks don't reach the edge or start conecting they were good to go. I saw the cracks and freaked, the other posts seem to agree with the tech but I don't feel comfortable having them present. Do you have to pull over every XX miles to see how far they spread???

 

Here are my new rotors from Devek. 2-piece, solid mount, slotted, heat treated, balanced. 6 pounds lighter each than Cup rotors. Don't know if they have them for the stock TT size. Also, got RS-19 pads that squeal in quadraphonic like nothing you've ever heard when they warm up. Between that and the bypass pipes, a friend was pointing out that I've probably got the loudest street P-car on the planet!...and I'm lovin' every minute of it.

 

HolgerB, those are nice. I like the idea of aluminum hats.

1- Does anyone else make stock replacement rotors for the TT?

2- Are the C4 brakes identical to the TT?

 

ColorChange is right. Go slotted next time. They move just as much heat and gas away from the rotor without cracking issues.

 

Heres a really good site I came across the other day.

http://www.brakewarehouse.com/

it also has a few really good FAQs.

 

You guys ever cryo your rotors? I used cryo'd rotors on a track car a few yrs back, and they held up amazingly well.

 

70,000 miles on my PCCB's with no issues - got 67,000 miles and 6 track events from the first set of pads......no issues with the rotors as you posted....

 

Here is what you want to avoid.