was wonderin if anyone knows if its possible to have 20x11 in the front and 20x13 in the rear. I would like to run the Michelin PS2 275/35/20 and 335/30/20. Can anyone help me out with the right offset I would need to make it clear without rubbing? I called CCW for the size before I order but the gentlemen gave me some weird offset #s that my local race store said wouldnt fit like 40 in front and 56 in rear?