Quote:
Originally Posted by RoverP480
Are you sure its warping or disc thickness variation . Not knowing you journeys but stopping with ones foot on the brake, especially with the discs hot can cause localised heat variation which can warp the disc.
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Correct, it can.
OP - What makes you thin your discs are warping, is it juddering a bit on braking?
A solution I found some years ago, which has worked several times for me...
On an empty bit of road, get it up to 70 and brake as hard as you can, without actually locking the wheels, but (important) do not come to a complete stop. Repeat twice more.
Idea is, that the stops with your brakes applied, causes differences in ability for the disc to cool and sets up stresses in the steel and it warps. Getting them good and hot relieves the stresses - the not stopping completely, prevents more stresses being set up.