I want to get a set of 18 inch rims, 235 x 40. I think that there 8 by 8.5's. Are these to big to fit on a 98 audi a4 1.8t quattro. I have 17 inch by 8s now with 225 tires and they seem to be fine, i just want bigger ones. I need some help, thanks

 

they will fit