So you wear them out? I had to Google those. Sport bike tires, yeah? That's a different style of riding than the cruiser I use. Is that why you go through tires more often? I love my tires. I get the exact same ones every time. I don't remember what the name is but I did a lot of checking the first time. I don't much in the way of long trips. The longest is usually an hour there and an hour back. I do all the errands I can in the nice weather but it doesn't amount to a ton of mileage. I check the tire pressure a lot, obviously, and a visual on the tires. It's right around two that they're showing their age even when the tread is still acceptable. @VW911 I'm gonna have to check my car's tires to see if we do that also. It's a great idea. Maybe we've been doing it all along. What's the "WW" stand for? thanks.