himself

My front rotors need to be changed. Ok, no worries. But my brake wear light came on at that same time. I know it's the fronts, as they were getting low.

I did some research here, and read a few posts about not changing the pads and rotors at the same time, with some discussion of it being better to bed pads with old rotors.

My car is at the Ruf shop, and it was their suggestion to do pads / rotors at the same time. These guys are dedicated track junkies, and highly qualified P-car mechanics, so I have faith in their recommnedation to do both - so can someone shed some light on the "don't do both at the same time" line of reasoning? Or is this just an old PorscheWive's tale?

-td

chrisp

if you are getting a new pad type then new rotors is ideal. If you reuse rotors then you need a get all of the previous transfer layer off so the new pad material has a fresh surface.

if you are using the same pads then new or old rotors doesn't really matter, but if the rotors are low you might as well have them changed while they're in there.

RedlineMan

Hey;

New rotors take a lot longer to polish smooth than pads take to bed. With new rotors, you need to drive it a bit to get the smooth rotor face you need for top performance and to bed pads properly. Doing both at once slows the process. Doing one at a time speeds up the bedding of either component.

If you take new rotors out on track, you should be a bit conservative for a while. You stand to overheat and damage the rotor otherwise.