Take a look at the side of the tire. In small print somewhere on the very inside edge, you will find wording such as "Maximum Load Capacity 2503lbs." this is the rating per tire. Another option is to go on the Tirerack.com site and look up the exact tire brand and size you have. Then once you have found it, click on the "Specs" link. The page will load and your tire specs should be right there at the top of the list.Ok. I just got an 08 dc Xsp with 305-50-20's and had to put new tires on. Where is the load rating on the tire? and my label in the truck says 32lbs.