G'day all, Hope someone may be able to help here. Am looking to fit some winter tyres to my Audi and thought I would change down from my current 18" wheels to 17". I'm not sure what spec wheels I would need though? Would generic A4 wheels fit or would I need specific ones for the Avant or indeed the quattro? What offset would I need? 7.5 J width? Local dealer was not exactly helpful! Looking at these, would they be OK? Audi A3 Sport 8P Alloy Wheels 17" x 4 set GENUINE Audi A4 A6 REFURBISHED | eBay Regards and thanks in advance!