Thanks guys! Called Big-O Tires and they have a sale on 275-35-18's Pirelli's for $299 installed for a pair! So not going to change the size. (For Now)
I have 285 35R 18 Hankooks all the way around and love them. A little rubbing on the front with 10mm spacers and "indented" GC suspension crank up to maximum ride height, but not bad. But no problems at all in the back with 18 x 9.5" wheels with 25mm offset, with or without 10mm spacers.
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