I've found two Audi wheel fitment guides which shows the size of wheels of each Audi model. hope they're useful :) 

http://www.alloywheelsdirect.net/information/fitting_chart/audi

https://www.wheel-size.com/size/audi/

Cheers

Steve 

thats a great site but how do i find out what my car is on that list

69plate a6 sline black edition

3 hours ago, Neverlandandy said:

thats a great site but how do i find out what my car is on that list

69plate a6 sline black edition

Yours is a C8 4K.

If you have the My Audi App you can find out your configutration and extras there

I have tried to get the my Audi app but i cant finish the install of it until i get my v5

Its looking for a code that should have been on a plastic ring on one of the keys but my keys doesn't have that

phoned the help line and the guy was very nice and said that i need to wait for the v5 in my name