confirmed that they were 18x8.5 for the front and 18x9.5 for the rears. The <$2,000 price quote included Potenza RE930 tires in the sizes of 235/40/18 for the front and 275/40/18 for the rear. He said he looked in the book and is sure that Racing Hart makes these in this size, and that they would work nicely with 300Z's.