Pirelli has a 305/35ZR22 Pzero assimetrico. Overall diameter is 30.4" and will give you a little more cushion than the 285/35's. The downsides are the high price(i'm assuming because they're pirelli's) and the tread depth is only 10/32" so you're probably not gonna get a lot of miles out of them. They also have a 305/35ZR23 with an overall diameter of 31.7". I'm gonna start the hunt for the best price now.