I have a 1985 Audi 5000 S Turbo. What size rims could I fit ? I looked but I couldnt find what type of lugs or mm it measures. Ill check my centercaps when I get home to check...

 

should be 4x108

and size all depends on back spacing and the how low or not low your car is.

 

I believe it is 5 x 112 mm but I dont know the stock offset or any other things that effect the fitment. It is at stock ride height since I havent modified it in anyway yet...

 

thats right
i forgot the larger models went to 5x112 for some reason. my 4k is 4x108 so for some reason that was the first thing i thought of.
i would find out what your back spacing and offset is and then from there you can kinda sorta use math to find out if a wheel well fit.