First I want to apologize to everyone for taking up your time. Thank you all for your replies. I took out my Felt 3 niner off road after a year and now remember why I stopped riding it. It rode like a tank even with a Thudbuster ST seatpost Maxxis 2.5 Minions up from and 2.35 Icons in back. I dropped the pressures down to 15 lbs on the tires and started bobbing around . I'm going with my late great Titus Racer X for winter riding . There seems like a better choice of tires in 559mm rims anyway . Why that is I'm not sure. I was going to order snow tires from Modern Bike but if anyone knows of a better place to order snow tires let me know . I've bought from them before and have been satisfied.