I think it came with 25s, but if you hadn't asked me I could have told you for sure. I rode with a guy who builds wheels this past Saturday and asked him how my wheels could be expected to hold up based on what I had read. He said if I were a bigger person, maybe through spring, but at my size (125-130) they would probably hold up for a couple of seasons of road.

Mimi made a good suggestion though on the weather.

Have you got them aired up to the max too? It's surprising what a little tire squashiness can do to a ride. Makes it feel muddy.

I'm holding off on any changes on my ride until spring. Then I'll invest in some good skinny slicks, among a couple of other things. But as the days here are getting short, it's getting harder to get in a weekday ride. Even with my blinky light on the back.

OH, didn't you also say you are moving? I'd delay any big change til then. Even if you do decide to go with new wheels, you want to keep the xeros as backups, and you don't want to have to move them.