Thread: Brake Rotors

Originally Posted by joel0407

In the past I would always fit new pads if I fitted new rotors but that maybe just an old way of thinking for the way old brakes wore.

I think the theory behind it was that as rotors lasted multiple sets of pads, and the pads were the cheaper item. The new pads would wear the high points on an uneven disc. If the disc was replaced, you would want to maintain an even surface as long as possible and it wasn't good to fit uneven pads to new rotors.

Now days with rotors wearing rotors and pads wearing as quick as one another that might be obsolete thinking.

UP FRONT DISCLAIMER: I am as in the dark as most people, so can't speak with any known, proveable authority at all. Happy to be politely and helpfully corrected.

I was going to replace get both new pads and new rotors fitted at the same time, as I have always had in the past, but due to some parts availability issues, fit the new discs 2 weeks or so before the new pads (and paid for labour twice. ) I, too, thought this would be good for them to bed in to each other.

However one of my knowledgeable and experienced performance car driving friends said that they tend to bed one thing in at a time - so that it is always a rough surface against the smooth surface, which would reduce the risk of glazing.

From my commoner's point of view (see disclaimer above) this seemed to make sense so long as it was a short while. But then again there are plenty of things that might seem to make sense, but actually are not the best thing to do. Oh well, I am sure I won't actually ever know the difference.