On my rear brake rotors there is a lip on the outer edge of about 1mm, is this normal or a concern? cheers

Normal. Normal on any disc on any car, front or rear, when they've done @10,000 miles or more. It's just the part of the disc that the pad doesn't touch so doesn't get any wear. It's only normally a concern when you are replacing the brake pads - your garage should advise you whether they need changing when the pads are next replaced. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

Last edited by Steve D on 13th Sep 2017 6:28 am. Edited 1 time in total

Cool, so no need to replace them by the sound of things. Cheers

No. Not unless you don't like the look of them! Never heard of a garage changing discs but not pads. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

When I was in the trade I generally gave all the edge (both sides) a small tap with a toffee size hammer and used emery cloth to reduce corrosion and the lip when fitting pads.

New Pads bedded in quicker and with no squeals (other tricks employed) as customers are all whingers and dont want to pay. Oh and that would be me now.

H&S note, when using hammer shale fly's off and always goes in your eyes.  FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

No squeal? Does the mismatch of new pads and lippy rotors cause squealing?

Can do and a little water resistant grease on back of pad were it touches the piston alleviates squeals. Use too much and your dead though Another trick is to edge the new pads, just a touch with emery paper (its dust remember) so the squeal is weeks away and so is customer. Got to be a few utubes out there showing all this. FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current