i ran 35 /12.50 /16 bfg mudders ,on my f250 when i lived in bend ,OR ..they are just plan scary with out siping ,after siping the best snow tire i have used .i run dura tracs here in texas as most tire shops dont do siping ..i did the entire tire and yes over time did get some chunks ripped out ,nothing bad .as for the life of the tire ?bfgs are great tires and last long ..hope this helps..