I have set aside tomorrow to change the front discs and pads from 288mm to 312mm. I had a quick look in the old haynes manual to check I had all the right tools to hand. The haynes manual says that if you remove the caliper carrier bracket, you must use new bolts to put it back on. Now I have never changed a set of bolts when I have changed discs before. Is this just a best practice thing? I intend to put a line of blue threadlock on when they go back on to help keep them in place! Anyone got any views on the new bolts thing? I'd usually go and get some from Audi, but I really don't want to go across town at the moment, traffic is murderous!