Ken89911T

I want to remove a front ceramic rotor to facilitate other work on the front end. I assumed the rotor would just lift away from the hub once the 2 Philips-head positioning screws were removed. But....the rotor seems unwilling to part from the hub and I am unwilling to bang on the rotor to loosen it up. Anyone else had experience in solving this problem?

Catorce

Smack it with a mallet. There's nothing holding it on except for two set screws, just like a normal rotor. Most likely, you have corrosion on the metal hat which is sticking to the hub.

Ken89911T

I agree its probably corroded, and that's the cause of sticking. But I'm led to believe that ceramics, while very durable, are somewhat brittle and can break easily if struck. Even with a rubber mallet, I'm reluctant to strike the rotor itself. I'll try to smack the inside of the hat, if I can get access to it.

32krazy!

Pb blaster into the lug holes let it sit then use a plastic dead blow hammer on the face only if the hat

pfbz

I'd probably try some torch heat on the hat before a hammer... Pretty expensive if you do chip the rotors.

tinkerbill

The official factory workshop manual suggests tapping it gently with a rubber mallet.

32krazy!

The face is aluminum never hit the rotor rings just the center bell

Johnny DB

You can put A LITTLE heat on the hat and it should come off no problem.

Catorce

Which is what I said, being an owner of not only the workshop manual but two of the cars as well

Kevin

A little tip.. General Motors has sold Ceramic Rotor protectors for the ZR1. There are made of foam and are put (slip)around the rotor during wheel removal and brake pad work. The part number is GM # 20772411 They are under $20 and can be a real $$$ saver.. They will prevent any accidental damage. You can Google the part number for pictures...

Rocco07

What a combination. Very expensive, fragile, yet part of a critical system. Don't get me wrong, love ceramics. But they need to be cheaper, and more durable from handling perspective.
Is the cost worth the performance and risk? Rhetorical. It's been debated to death I know.

Car Crazy

The cost is brutal. What I find most ironic is the fact the ceramics are made for the track yet none of us use them at the track because they are too expensive. Track junkies go with steel rotors because they are cheap. People who want dust free operation on the street buy the ceramics.

Johnny DB

I really don't get this...my friend tracks his PCCB equipped RS 4.0 and replaces the pads when they are at 50%. Rotors are original and still look and measure new.