A6 Alloy Wheel sizing/spacing help needed please.

[MarkG]

Hello, when i purchase my 2000 A6 2.5tdi recently it came with 5 stud RS6 style 18''x8'' Alloys c/w 225/40/18 tyres.
I would like to change these to a more standard 17'' alloy.

I just purchased a second hand set of original A4 17''x7.5'' alloys c/w 235/45/17 tyres & they lock solid on the front suspension!

I believe it may be to do with the offset?
The inner distances between the wheel hub & edge of tyre wall is 150mm on the 18'' & 165mm on the 17'' alloy.

Can anybody help with any suggestions to get over this?
Many thanks..

[The Mk3 man]

Sounds like the offset is different. The offset for your wheels should be stamped somewhere on the inside of them for you to compare - look for ET45 or ET35 etc - that's the offset. If you want to stick with your new 17"s you can get around this using spacers, but be careful to get some advice on choosing and using spacers - I've heard that cheap ones can give you wheel balancing problems becuase they do not line up perfectly central on the hub.

[Peter D]

And you will need longer wheel bolts and locking bolts. Regards Peter