check
www.tirerack.com
they have specs on quite a few tires
the kumhos are AWESOME tires for the price. and i personally have had no problem with nittos either, i know a lot say they are horrid blah blah......but for some reason i have no problems with mine. they arent cracking, they get pretty decent traction in the rain and they are 40 series and my rims arent messed up any.