My stock Bighorns are getting close to the end of their life cycle. They've been a decent tire for me, but I'd like to try something different next time. I'm thinking about going up to a 28 or 30" tire for my typical trail riding that I do. But I'm also curious about what you guys run in the RR's. I would think that with it being more fast and flat that you would run the lightest tires possible? I could be totally wrong though.