So I noticed a wheel cap was missing on my motor. I thought I would save myself a trip to the dealer and may a couple of £££'s and get one off EBay. Well I seen 4 x caps for £7.95 inc delivery so I thought bargain, why not. They arrived promptly and I was well chuffed as this meant I had 3 x spares. So I went to put one on the car and FACE PALM or bang head, it was too small. I have 18" rims for SLine and the caps I brought said they were 60mm but I think they meant 60mm on the main face and were smaller on the back where the fittings are (maybe something like 57mm). Well I think I needed 60mm fittings on the back (or something like that). Anyway was not too happy so went the dealer and got one from there and it was not a bargain at £13.45 for one £££. So I now have 4 x caps (of some size ???) spare and do not require them, they have an Audi number on the back 4B0 601 170 and if anyone wants them for free please let me know and they are all yours as long as the postage is not ££££££££££ like the price of a wheel cap at an Audi dealer.