The new rotor thing has to do with the transfer layer. Brake pads transfer a layer of material onto the rotors and that's ultimately what the pads grip on. Keep in mind, we are talking microscopic layers here. The theory is that new pads may not bed in properly if there is a layer of material already on the rotor. This is really only an issue if you are altering or switching brake compounds. For example, if you have a harsh compound and switch to a soft compound, it may not be strong enough to remove the old transfer layer and apply it's own. The reverse is never an issue.

Some brake pad manufacturers like Carbotech will tell you whether or not their pad materials can be interchanged without much issue. When staying with the same pad material, the only thing to worry about is the thickness of the rotor.

Good article about transfer layer here:
https://www.apcautotech.com/getmedia...c-8-2018_1.pdf

 

That's a really interesting document, thanks.

 

I agree 1000% - any shop around here replaces (or resurfaces) rotors every time they do a pad replacement for the reasons stated....some even insist on rebuilding the calipers basically taking even an econobox brake job from $200 to $1,000+......yet on my motorcycles (which I service myself) I've been replacing pads only and inspecting rotors for warping, wear or other issues for decades now....even on racebikes that see extreme use. It's all a money grab bunch of BS if you ask me.

Dave

 

Without reading all the replies, you dont even need pads @10mm, 8mm. More like 2-3mm.

 

Copied this out of the 2014 shop manual. I recall some discussion that CCB rotors should be weighed rather than their thickness measured.

 

Hey Bradley, I have the same issue with my car. At 16k miles, I had the 'Ceramic disc brakes worn' cluster message come on. Were you ever able to resolve this issue with your dealership?

 

My front CCB rotors are worn out. I heard that some break companies refurbish or restore the disc/rotors. Any advice who can do it? Thanks

 

I briefly read The replies but I can comment on carbon ceramic brakes because I just had them on my c7 z06. Brembo makes them same brand as f type I believe. You can not measure them. They have to be weighed. If you have 9000 miles on your carbon ceramic brakes those things are barely even broken in unless those are 9000 miles of tracking the car. Carbon ceramic brakes have a gas inside that only gets discharged when under extremely high temperatures which is why they tell you to weigh the brakes not measure them. Technically carbon ceramic brakes on the street Should last at least 100,000 miles for the rotors. Pads different story. After five track days of racing my z06 very hard, Rotors were only 80% to weight of needing to be replaced. This goes for all carbon ceramic rotors. They last forever on the street. Whoever told you your rotors are needing to be replaced might be full of crap. I would pull your rotors off and weight them. The scale needs to be in grams and go up to 7-8k grames to be exact. You can’t even look at the rotors and tell to the naked eye they have to be weighed.

Most dealerships don’t know anything about carbon ceramic brakes because they are in fact very different then other brakes. They also require a “burnishing in period” when new that I bet the dealership won’t tell you about.

 

Ltrain925 advice seems good to me, definitely rotor wear is determined by weight not thickness.

Any wear warning light would most likely be pad wear

And as said Brembo make the CCB brakes for F type, will definitely be standard fitment on other makes, not Jaguar specific

 

Hi

I am looking at f type with CCB, do you specs on the rear for pads etc like you have for the front
thanks

 

DefaultHi

I am looking at f type with CCB, do you specs on the rear for pads etc like you have for the front
thanks