I ran 2 sets of 18" fast trekkers and they hooked pretty good, but they wore out a little quick. I then switched to 20" fast trekkers and they wore like iron and hooked like glue. If anything, they hooked a little to hard. I ride a little pavement, a little gravel and hard pack dirt alot. If your going to trail ride nasty stuff with dirt, mud and rocks I would roll with the fast trekkers hands down. I have ran cut Kendas all year and they work well on the track, but wear out very quickly on the trail. I would recomend them as a very good tire for the track, but they have a short life span on the trail.