i'm running the swamp fox tires now too and they are nearly identical to the dirt devils in the tread pattern.i think they are a great all around tire for trail use and should do ok in almost everything but the deepest of mud.I have about 400 miles on mine right now and they show very little signs of wear on them.they do work great in the snow tho IMO.will i buy them again? doubtfully.i will be looking for a tire with a rim guard molded in and maybe a little more aggressive pattern for the mud but nothing like a 589. maybe a dirt devil XT or a mud lite XL all i want is a little more tread depth and i'll be happy.