So I have just ordered a full set of Pagid RS29 Yellow Pads from Dan @ Vivid (seriously high end for brake pads ! OEM on GT3) now my front brake discs were replaced at circa 30,000 miles and on my rear brake discs (40,000 miles) there is a noticeable lip on the edge of the disc, where it has worn down since new BUT the rear disc itself is perfectly smooth. Should I replace the rear discs too now with the new pads or can they last much longer ?? My front discs were only replaced as on a long trip the pads went down to the limit and grooved (blame my Porsche Dealer for that!)

 

Discs = Rotors

 

It's better to bed new pads on old rotors, don't ask me why because i don't know, but that is what I've read from a number of brake sites. Now as far as the rear rotors, smoothness or a lip is not the issue, but disc thickness and cracking between the holes is. Have this checked out and then make your decision.

 

Landjet that is very helpful assistance tx. Sir

 

From what i know depends on the cracking between the holes.

 

One can physically see/detect by eye any cracking between the holes ?

 

The specs are as follows:

Rotor thickness front: New = 34mm, Wear limit = 32mm
Rotor thickness rear: New = 28mm, Wear limit = 26mm

I recall that the spec is to replace the rotors if cracks are over 7mm long, but I couldn't find that in the manual at the moment.

Edit: If you have to ask, you don't have the cracks. They are quite obvious to the naked eye. They come from heat cycling, so if you don't track your car, you may never see them.

Jon

 

Only 2mm allowance for wearing.

 

they are thick enough to catch your fingernail. And yes you might not ever see them unless u track the car. If you do check the inside of the rotor as well.

 

Absolutely! I'll take a picture of my fronts for you tonight if I remember.

 

Manual pages attached. No spec on fingernails, just the numbers I put in my first post. I agree that it doesn't seem like much. I usually go by the length of the cracks for replacing mine.

 

Basically when your non-slotted rotors become slotted that would be a good time to change.

 

I would recommend a set of GircoDisc slotted rotors for your particular application. They will provide much better braking and the wear tolerances are also much greater then the OE rotors are well.



** The image displayed ( slotted & drilled )

Please pm me for details and pricing

 

champion.. whats the price of those rotors?

 

Are these bolt on items?