What would be a correct offset for 20" wheels?
Thought a8 takes everything between 35 and 45
I just got a nice set of 20's and they don't fit

Front is 8.5J ET42 with 255/35 tyre (they don't clear calipers)
Rear is 10J ET45 with 295/30 tyre (they don't clear caliper literally by a hair)