I’ve got a 2015 sportsman sp. For some reason they keep losing pressure. The fronts were showing 0 on the gauge from the tool kit and the backs were fine. I put air in them and kept riding. Then the front 2 and rear right were low all showing 0. I filled all 3 of them up again and started riding. This time the rear left started losing pressure again showing 0 psi but I haven’t put air back in it. Its in the back of my truck.

These are the stock wheels and tires. Any ideas? Take it back to polaris and have them check it out? Thanks in advance.