Low-profile tires seem to be the rage. While they Gen 2's 17-inch wheels and 215/50-series tires are not that extreme, the ride was harsher than I would have preferred on the crummy, pothole-riddled streets and highways of the Boston metro area. I went to TireRack.com and you can pick out different size wheels and tires that will fit your vehicle and not change the speed/rotation ratio. To go to a higher profile, 65 series tire, the wheel needs to be 15-inch to keep the overall diameter exactly the same, with the tires slightly narrower. For 15-inch wheels, there was actually only one choice, but they look great. The tires are General Altimax and get a little better gas mileage. Ride over rough roads is much improved and I don't have to be so paranoid of hitting potholes. I didn't really notice a difference in other aspects of handling, although I am sure that aggressive cornering would be affected.