Hi I have an Audi A6 Quattro 1999. I am looking to get a new set of wheels and I was wondering the maximum size I can go to without having to make any extra modifications. I have heard I can fit 19 x 9 with 235-35-19 tyres. Also is my bolt pattern 5 x 112?

 

The 19 x 9 may cause rubbing. This is an up-three size change. It is at the maximum allowed range. If you drive the car hard, any hard cornering will risk rubbing. Your best bet is to go with 235/40-18 tires on 18 x 8 wheels.