[EricH]

Maybe tread quality has improved, or the plactions protect it better, but I do know that when 330 used tread on their wheels, we'd be unscrewing it and putting on a new belt every event or so. I've also seen tread come off mid-match; if that happens, it's a good idea to replace the tread to minimize the chance that it'll do the exact same thing the next match.

I also know that 254 likes to keep an extra set of wheels around, ready to install if tread comes off.

On our pneumatic tires, which we've been using lately, if you can get more than one event out of them, you're doing well. Those actually have a wear indicator.