10 plys can be a bit much for a half ton truck day-to-day. You can get the duratracs with an 8 ply I believe, and the Ko2's LT with a 6. They are fine for moderate off-road use. If you're driving those roads in a half ton everyday like a rig hand, then sure, the 10s might be a good idea. The half tons aren't meant for those heavy tires. You'll risk more wear on your suspension components and bearings and such. 3/4 ton and above trucks, then 10 ply is the way to go.