I've been refurbing a set of S4 calipers for the rear and today was swap over day. Rears were needing done anyway and thought I'd better upgrade to regain some front to rear balance since fitting the big Porsches up front. Fitting was a doddle but discovered one of my wheel bearings is on it's last legs, not much play in it but it's fairly rough sounding. So that'll be another day dismantling but hey ho at least I spotted now and not later.
Before, Knackered 245mm plain disc and sticking caliper.
Nice new 300mm vented disc and refurbed S4 caliper.