Why are you wanting bigger rims? I went 17s on one of my wagons and after driving it a summer I wasn't so sure anymore. I live in an urban area with lots of street car tracks, pot holes, bike riders, etc... felt them all hard. On my next wagon I stayed with 15" rims looks better feels better and the car handles great with the help of a bunch of firm feel parts and the 15x7 and 15x8 wheels 245/60,15 front and 275/60,15 rear.
