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You are looking at a preview of what’s in the timed Michigan ORV Ed Course. Feel free to look around, but you’ll need to register to begin progress toward getting your Off Road Vehicle Safety Certificate.

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ORV tires take a lot of punishment, so maintaining the correct tire pressure is critical. Most ATVs have relatively small, low-pressure tires. Motorcycle tires may or may not be low-pressure, depending on the model. Consult your owner’s manual for the recommended pressure.

  • Check the tire pressure before each trip. Over- or under-inflated tires:
    • Can result in tire or wheel damage.
    • May change the handling characteristics of your vehicle.
  • For low-pressure tires, use a low-pressure gauge. Most standard automobile tire gauges do not read low pressures accurately.
  • Be sure all tires have the same pressure. Otherwise, vehicles with three or four wheels may pull left or right.
  • Inspect each tire for damage that could cause an air leak.
  • Remember that altitude affects tire pressure. A pressure that reads okay at home will read lower after you take the vehicle into the mountains.


  • Check the wheel lug nuts used to secure the wheels to be sure they’re tight.
  • Check for worn-out parts by trying to rock the wheel on its axle.