As you said, doesn't hurt. But if it takes that much weight there's something else wrong there. Maybe the tire has been worn to out of round by a poorly set up vehicle before, or when airing up the beads didn't seat properly which believe it or not happens a lot. There should be a line just larger than the rim all the way around the bead, make sure its equal distance from the rim all the way around. Give them all a good spin and make sure there isn't more then a couple 32nds of movement up or down and side to side. If all of that checks out, I'd move on to suspension and steering