i got y2ks with 255/55/18 tires.
they rub significantly in the front. they touch the upper A-arm. what i did to fix the problem was get 1.5" al6061t6 spacers all around... this fixed the problem. no rubbing even at full turn. 1.5" makes the rear look real nice. however, it does make the tires stick out a little in the front fenders. after re-doing the math, you only need a .75" spacer in the front to use the y2k rims. however, the smallest spacers w/ lugs you can get are 1".... so if you get y2k rims -- put in 1" spacers in the front, and 1.5" in the rear, and you're good to go.
y2ks have +36mm offset, and y2000s have +24mm. if you want to avoid spacers, get y2000s.