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Currently got the stock 19 inch wheels on my c5 rs6 (9j 5x112 et35 255 35). Wanting to put 18s on with sticky track tyres. After a set of Oz Formula HTL's in black. My question is would 18 x 9j with 255 40 fit. I belive some of the c5 came from factory with a 18 inch wheel but was it a 8.5 et 30j? Didn't know if the 18 x 9j would rub on any of the suspension. I belive they just clear the calipers. Any help appreciated or if anyone has got pics os a c5 on the alloys in question or any 18 x 9j.

Thanks, Joe.

According to the spec sheet the 18's are 8.5 J x 18 RS 30 in 9-spoke design with 255/40 ZR 18 tyres.

255/40 18 on a 8.5j? Doesn't make sense if it's the same tyre on a 9j. Thanks