If my rear brake pads are shot @ 67K, any chance my rotors are worn out too?
Elder Member
Joined: May 2002
Posts: 34,592
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IMO, rotors last forever as long as the braked aren't metal on metal
This whole BS about replacing the rotors is wrong and probably only advocated by stealerships. That is unless the pad is completely worn out and started rubbing the rotor w/ the metal. In that case, the rotors would be shot.
Senior Member
Joined: Oct 2002
Posts: 7,398
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Yes and no.... Depends
If you are replacing them yourself like a real audi geek, then yea just do em at the same time.
Audi doesnt reccomend re-surfacing their rotors.
Rotors arent that expensive if you stay away from the stealership.
Audi doesnt reccomend re-surfacing their rotors.
Rotors arent that expensive if you stay away from the stealership.
AudiWorld Uber User
Joined: Mar 2000
Posts: 66,965
Likes: 1
There is a very simple way to check...
you can mic the rotors, and compare them to min. spec. You've got an older car...surely you've replaced the pads by now. What was the thickness on your rotors compared to min and new spec. when you changed the pads?
At a bare minimum, rotors should be resurfaced when installing new pads...but once again, if you resurface them, and fall below min. spec, you'll need to replace them.
At a bare minimum, rotors should be resurfaced when installing new pads...but once again, if you resurface them, and fall below min. spec, you'll need to replace them.
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AudiWorld Super User
Joined: Jan 2003
Posts: 9,298
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Obviously...
Rust is iron oxide (oxidation of iron and NOT of water), which forms on the surface of the rotors. Where the brake pads remove the iron oxide(tohether with some metal), the rotor will be nice and shiny until it rusts again. The pads don't touch the rotor at the very edge, and a rusty ridge forms there. That ridge makes it very obvious that the rotors wear. You don't even have to measure the thickness of the rotors to see that they get thinner and thinner. That edge is one of the reasons why rotors should be resurfaced each time you change the pads.
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