I've noticed after snow rides your tires are freakishly clean. It may be the crystals wearing on the rubber. I'd keep any eye on it. Are you running Stans?
Bring your wheels inside, up to room temperature, and smear a thin coat of Shoe Goo on the sidewalls where it is abrading. Let it set up for 24 hours and cure up. That should help a lot.JeffSkisMontana said:....using tubes. But your point on how clean they are is interesting....all i did was bring the bike in after the ride...no cleaning...and they are amazingly clean! I am starting to think the snow which had been on the ground for about 10 days must be freezing and thawing.....must be abrasive as ever. Gotta ask the others whom I rode with if they have any unusual wear.