How to Check Air Pressure in a Tire in a Ford F-Series

The Ford F-Series trucks are known for their ability to haul things quickly and easily. In order to keep using your F-Series truck effectively, you need to keep your tires inflated at the proper levels. This can be done easily with a tire gauge and a couple minutes of your time.

Difficulty: Easy

Instructions

Things You'll Need:

• Tire gauge

1. Get a tire air pressure gauge. These can be found in auto parts stores and come in many varieties. Decide whether you want one with a rotary dial display or a pressure stick.

2. Give your tires time to cool down after driving. Even a brief excursion can heat up your tires enough to expand the air inside, throwing off the results. If you can wait, test your tires in the morning hours or after allowing your truck to cool for an hour or so.

3. Remove the caps from your valve stems. These twist off easily. Unfortunately, it's also easy to lose the caps, so keep them somewhere safe while you check the pressure in your tires.

4. Push the tire pressure gauge onto each of the valve stems. This can be a bit tricky if you've never done it before. If you hear a hissing sound, this means that you're not pushing hard enough or might have the wrong angle. Keep trying until the hissing stops. Repeat these steps for all four tires and the spare.

5. Double-check the results you've found with the recommended pressure levels. Your 2008 Ford F-150 XLT 4x4 Super Cab truck with original equipment comes with tires rated at P235/75R17 108S. The "P" means that the tire is usually intended for passenger car use, even though your F-150 is equipped with them. The "235" is the width of the tire in millimeters. The "108S" means that each tire will be able to support 2,205 lbs. or 1,000kg. Making sure that your air pressure equipment load doesn't exceed these limits will keep your tires safe. Ford recommends you keep the tires of your F-Series truck inflated at between 28 and 36 psi.