Dewald Basson
///Member
Carbon@TheFanatics said:Don't skim disks on an M3!
Disks are heat-sinks, less material means less heat storage so they overheat quicker. Not only that, machining would cause internal stress that could lead to warping again.
Skimming is a solution for a Fiat Uno, not a performance car.
You need a run-out gauge to measure the true-ness of the disks, a crude way would be to hold a pencil against the caliper and let it just touch the rotor, then turn it and see if the gap changes.
If they are warped, replace it with OEM disks or good brand name ones if the car gets driven hard.
Clever, :clapper::clapper: