Under what conditions should a brake disc be replaced (R90/6)? They're kind of pricey (dual discs on my r90/6) -- about $300/each and I don't want to buy new ones if it's not necessary.
Also, after removing the calipers the rubber seals obviously need to be replaced. The replacement kits I found include a new piston, but my pistons look fine. Anyone know where to buy just the rubber seals??
I believe the disks have a minimum thickness stamped into the inner edge somewhere. Also, if the disk is grooved where the pad has been running in it, that would indicate uneven or bad wear.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.