Been having trouble with the tires. Changed the bearings every spring and axle is straight and not bent. Can't keep the tires that I'm running from wearing out. They are 4.80-8's with reconmended air pressure. There isn't a heavy load on them just a bare bones 14 semi-v with battery ,9.9 motor, and gas tank. So weight should not be an issue. Travel distance is from 12 to 40 miles per round trip depending upon where I fish. Speeds never exceed 50 mph, all back roads. I can only get about 2000-3000 miles on them before they are bald. Need to find a brand that will last me for awhile. Tired of putting on new tires every year. Which brand seems to last the longest?