How to Choose a Tire Size for Your Pickup Truck

You need the right tires for your pickup truck.

Using the wrong tire size on your truck results in more gas usage and other problems, including the failure of your tires. The system for tire sizing is often confusing for beginners, especially since it consists of a series of letters and numbers and some letters are more important than others. T for example, indicates a temporary or spare tire and is only used for a short period of time. The only way to keep yourself safe and protect the weight distribution of your pickup is by picking the right tires.

Things You'll Need

• Owner's manual

Instructions

1. Check the tire details inside your owner's manual. The manual clearly shows the size and type of tire needed for your truck and indicates the weight or size of the tires. If you lost your owner's manual, check the end of the door on the driver's side, which should have the same details.

2. Read the numbers listed on your truck's tires. Truck tires typically begin with a "P", which indicates a passenger style truck or an "LT", which is meant for larger and heavier trucks, particularly those used for towing purposes.

3. Compare the tire details to the number listed on your current tire. The two sets should match, which shows that you're using the right size tires. If you notice that the tires on your truck are different from the ones listed in your owner's manual, it indicates that you purchased the wrong size.

4. Look at all the numbers to determine the right size needed. For example: LT195/50R16 63H. The first three numbers indicate the width of the tread, while the second numbers (50) refers to the height of the tire. The next numbers (16) indicate the wheel's diameter or the rim of the tire. The last number indicates the speed rating and load index, also known as the service description.

5. Pick tires that match the recommendations listed in your manual, as opposed to the tires currently used on your truck. Pay special attention to the letter and use the right type of tire as well. The size of truck tires is based on the weight of the truck and using the wrong size results in problems, such as not stopping quickly in the case of an emergency.

Tips & Warnings

• Always consult an expert at your local tire store for help, especially if you have a new truck or have never purchased tires for it before. Experts know what size and type work best for your pickup.

References

• 240 SX: What Tire Size Should I Choose?
• Tire Rack: Tire Tech Information/General Tire Information

Resources

• Tire Size Calculator