nitto says 32.76 and mine are 10ply. 3750lbs@80psi. im running 70 in them now and i lovin them so far. drive nice on the road not noisy and work well off road. in the mud they pack up like all non mud tires but they clean out fast with more wheel speed. these were my second choice of tires. i wanted the hankook rf10 at. but they were on backorder till xmas time and i could not wait that long. similar tire had good reviews and a few $ cheaper.