I also found 225,40,18 catch on the front pretty bad once you get your car pretty low so I went with a 215,35,18 on my fronts with a 5mm spacer to clear the coilovers think my offset is 42.My rears are 9s but stuck with the 225,40,18 not a massive stretch but still enough I was running 10mm spacers but with load in the back they caught the arche so I bought some 8mm which done the job.