This is a front tyre. It has about 2500 miles on it... maybe slightly more. I bought it last fall but haven't really ridden it much over the winter. I've noticed some bare threads starting to peak through. Should I relegate it to trainer-duty? Again, this is the front. Curiously enough I am not seeing anything like this in the rear. Maybe I do a lot of tight hard cornering? or maybe I've just been brushing up against curbs too much.