right now i'm running hd's all the way around. anyone that has picked up a set of the rear hd's know that they are pretty damn heavy. i love the tires and the hook up great, but i would kinda like to have a second set for different conditions. i was wondering if there is maybe a 4-ply 19 inch tire. i guess i could go with an 18. i would just like to get a set that is lighter but still has some durability. i would have to pick up a set of 2-ply tires and slice them open the first time on the trails. any suggestions?