Hubby is using the Nokian Extremes (294), and I have the Nokian 160s. They work great on the flats, on the dirt roads, etc., but they just don't have the grip on the trails- Hubby tried to ride again yesterday and just slid all over the place. And I just haven't seen any tires that have the longer studs, unless they are homemade. Maybe I just need to make my own tires... which could add a level of entertainment to my miserable, lack of snow winter.