This little cautionary tale is applicable to all cars with floating calipers.
To use as an everyday car, a year or so ago I added the Alfa Romeo GT coupe to the stable, FSH 50k, just serviced including cambelt & tensioner, full MOT and all went well - much the same as the Passat with 200k on that it replaced. 11 months & 10k miles later I felt that the brakes were not so efficient & seemed to be front biased in a big way. Fortunately the village garage is close so I asked if I could use the brake tester in his MOT bay to check them out (useful living in a small village sometimes)
. They were fine, nice & even good pressures, on the road the car stopped fine in a straight line. On a quick visual check just a bit of un-even pad wear, but they still didn't feel right.
Even though the garage looked at my figures had said they are fine for the MOT next month I decided on a full brake overhaul & clean up.
The pictures show what I found, all sliders had been sticking, discs were de- laminating, reaction pad friction material had detached from back plate on both fronts & big lump of friction material missing
So, as its 18 months since I had a good look at the my XKR brakes she is now in the garage & I will spend the next couple of days going over them. The Alfa has a full new set of grooved & dimpled discs with Mintex pads courtesy of Mtec who's service was great
Even if it passes an MOT it may pay to strip & rebuild or at least re-lube if only for your own peace of mind!!