MikeFish wrote: ↑Tue Feb 28, 2017 7:27 pm
Iain wrote: ↑Tue Feb 28, 2017 7:05 pm
Good question - though I think proving it could be tricky that its down to Audi - I was surprised tbh that I needed new discs as I don't drive it hard. If we all drive them hard, we would end up banned or dead!
Not being technical, how would scoring occur??? something between pad and disc? Apologies for sounding like a muppets!
Yes, or most commonly caused by not replacing the pads in time and the metal part of the pads damaging the disc. Could be an issue with the OEM pads not giving enough warning or an issue with the construction of the pads.
How many miles did you all do between the warning light coming on and changing pads? And were the pads down to the metal when changed?
I seem to recall someone else on this forum having the same issue too.
The scoring in my case was something got lodged in the caliper. Probably a stone.
Of the pad sets that I have seen wear down to the indicator, none have ever been even vaguely close to being fully worn out - the indicator trips comfortably before the pad is worn. It makes sense, really. Manufacturers would not fit a pad-with-indicator if there was even a tiny risk that the pad could actually wear to the point of damaging the disk before the wear indicator tripped as they would then become culpable for the cost of the new disks, their warning mechanism having failed to do its job.
However, in my earlier years, driving cars without pad indicators, I managed to see off a few disks by trying to eek out the pads just another few miles. Luckily, those cars' disks were of the "£50 the pair, mate" type from Euro Car Parts, rather than the "wave disks - you may need to sit down before I tell you the cost, sir" type.