Even It Out
The air pressure from left to right on each axle should be the same. So, if the ATV manufacturer suggests the rear tires need eight pounds, then both left and right rear wheels should be at eight pounds. If the front pressure is suggested at 6.5 pounds, this means both left and right. Be sure it is exact, especially on the front wheels, as any difference could make the machine handle erratically. Getting the proper tire gauge is a must as well. You can pick up an ATV tire gauge at most auto parts stores and some ATV's have them in the onboard tool kit.