Its not something I'm thinking of do cause I can't see the point for me but its something that I decided to look in to for cause I don't really have much else to do. I did a simple google search and not much came up, just S4s and quattro. Nothing for 2wd so I got on to ETKA and thought I'd cross check some part numbers and see what fits on to what. I might wrong, which is fine, I'm just information gathering and brain storming I guess. Audi B5 2wd rear discs are 245x10mm. Carrier part number 8E0 615 425. This is also used on A4 95-08, A4Q/S4 01-08, A6 98-05, A6Q/S6 98-05 and some VWs. Calliper part number A4 95-01, A6 98-05, A6Q 02-05 and some VWs. Sticking with the carriers, if you do a search for the A6, the carriers also fit on one running 255x10mm. Am I right in thinking that the rear carriers from a 2002 A4 will fit on to a 2wd B5 and let us run 255 rear discs? I know the callipers will need changing but if I'm reading ETKA right it looks like it works...................Unless I messed up the part numbers and its just the pad retaining pin. Any one got any thoughts or any thing? I'm off to search for more random things.