On: Dust from car brakes more harmful than exhaust, study finds

[smitelli]

A healthy disc shouldn’t wobble enough to push much of anything. We’re talking like 1/20th of a millimeter.

[rightbyte → smitelli]

Should be enough to relieve the pads I think? The less wobble the less the pistons need to retract too.

I mean you can hear scratching when the pistons get crusty and the don't retract like they are supposed to.