VistaCruiser
Observer
I will vouch for the toughness of the Cooper AT3! Ran them in the XL load range (between P & LT rated) & really liked them. Cruised over Colorado rocky trails like Mosquito/Tin Cup Pass etc. without a worry and very good traction when aired down to 20-16lbs. Performed well in snow at 12lbs. The LT versions of the AT3 seem to have a good tread depth also (17/32). They started me on the Cooper fan boy wagon, now I run the ST Maxx for a more aggressive bite. HTH.
Sam
Sam