I just spooned on another 804 front after a crash bent my front wheel. The old 804 still holds air, but has a bulge I didn't like. The car I hit was totalled. I still haven't mounted my new 805 rear yet, but will work on adding grooves to aid in lateral traction next weekend and probably go ahead and install it. If that solves my mud traction issues, I will continue to use these tires until something better in the same price range comes along, but I'm not convinced there is anything better for my riding style for the same price yet.