What is the biggest 18" tire you can run on the front with the car lowered? I have a friend that just put his OEM 225/40/18 on a 8.5 wheel and I think they are too narrow for that size wheel. I was looking at going to a 235/40 or a 245/40, 235's are only .3" taller and the 245's are .6 taller. Anybody got an opinion here? Also I'm in the market for a couple Michelin PS2's in the sizes above if anyone has a pair they are willing to part with. I'm not getting what I'm looking for out of my 255/35/19's so I think I'm just going to have them mounted back on my OEM's when my new wheels come in and just leave the 225/40/18's on the front OEM rims and get another pair, but bigger for the new wheels.