Tyres size

[Skelso]

Can someone please help? What is the correct tyre size for A4 Avant 2008

[zollaf]

probably quite a few options. what does it say inside the fuel filler flap ?

[drnh4]

If it the later shape car i.e the more current style (B8) that was only recently updated then

17" use 225/50/17
18" use 245/40/18
19" use 245/35/19
20" use 245/30/20

You can vary these slightly as others are in tolerance but those are the listed sizes as per factory.

If you want to keep it 100% correct you should tyres mark AO (Audi Original) it's not critical though.