October 28, 2016
I bought the 18x9.5" +45 wheels for all corners; staggered sizes are for looks, not performance, especially in a perfectly balanced car like the RX7. Plus, I can rotate front to rear. They are fitted with 255/35-18 Michelin Super Sports; these are my favorite street tire bar none, but they are not very good at all in the snow...heck, they're not meant for that! I bring it up simply as a caveat. They are, however, excellent in the wet. I also have them on a warmed-up '97 Volvo 850, but I highly recommend the Conti DWS for all season use, which I have on my other 850, my daily. Back to the wheels. This 18x9.5" +45 wheel with the 255/35-18 tire fits on all corners with no lip roll and no rubbing, at least so far. Visually they fill the wheel wells nicely without looking stuffed. At 17.4 lbs (Enkei's spec, not the 17.6 Tire Rack states) they are only about two pounds heavier than the stock (Enkei) 16x8 +50, the wide tires add about three more pounds over stock. Though significant, the increase in track, sidewall stiffness and rubber on the road more than make up for the increase in unsprung weight. The overall diameter of this setup is about a tenth of an inch larger (0.1"), which only serves to make the speedometer more accurate, as it's a bit optimistic with the 16/225's. Plus, the RPF1 is much stiffer. These wheels and tires plus the Ohlins coilovers make an incredible car really unbelievable! A great improvement. With all Mazdas it really pays huge dividends to be very mindful of total wheel weighted they are all very sensitive to heavy wheels. And avoid the 16x7" wheels-that's an inch narrower than stock! I highly recommend the RPF1's-AND the Michelins-a great street set up-and occasional track/auto-x. IMHO they look great, though not quite as nice as the discontinued SSR Star 5-spoke-which was beautiful in its simplicity but heavier and prone to cracking-and breaking.