Just got back from a 2200-mile trip to the Black Hills in South Dakota. The injection nubs didn't wear off until about 400 miles. The tires, after the trip, still look brand-new, no flat spots, even though at least 1500 of those miles were flat and straight. The grip was outstanding. Haven't hit any rain yet, but I hear the wet grip is also supposed to be fantastic. I am running the pressures at 39 front/41 rear, which seems to be great.