I was checking out a piston the other day and I noticed wear marks on either side of it as seen in the pictures...
...is this normal or dangerously expensive???
I haven't checked out the other pistons yet...they might have it too :(
Ok - I removed my question.
I have new pads (DP sintered ones). 70 quid (euro) but it's not worth to take the risk. It was a stupid question in the first place...