Yup, 215/35-18 and 265/35-18. There aren't a lot of tires in those sizes for our cars - for example, no "extreme performance summer tires". There's one "max performance summer tire" and it's an excellent choice: the Goodyear Eagle F1 Asymmetric. Note that the 215/35 has a different speed rating from the 265/35; this is not a big deal on the car, because both ratings (W and Y) are even higher than the stock tires on the NSX (Z). But that tire won't show up if you enter both sizes at the same time on the Tire Rack website. Instead, you have to enter each tire size separately and place the tires in your internet shopping cart two at a time.