On the now closed NorthTrailTalk forum, we discussed the poor Duro tires over and over again. Glad to see Heartland may be going away from them. And yes, many of us had sidewall cracks after a year or so, even those who had their trailers in covered storage, in all parts of the country, with very little mileage on them. When a tire fails that way, that early, you do everything you can NOT to put them on again. We went with Carlyle tires, could not get Maxxis anywhere convenient (in 2009). Traded the NT shortly after.