Load Range vs Load Index

Load Index vs. Load Range: What's the Difference?

Load index and load range are two different ways of measuring a tire's maximum load carrying capacity. Load index is a numerical value that indicates the maximum load a tire can carry when inflated to its maximum pressure. Load range is a letter designation that indicates the tire's construction and maximum load carrying capacity.

In general, tires with a higher load index can carry more weight than tires with a lower load index. The load index is typically stamped on the sidewall of the tire near the tire size information. The load range is also typically stamped on the sidewall of the tire, but it is located near the load index and speed rating.

Maximum Load for a Tire

• A tire's maximum load is the most weight the tire is designed to carry.
• This information is typically stamped on the sidewall of the tire in kilograms (kg) and pounds (lb).
• The maximum load for a tire will vary depending on the tire size, construction, and load range.
• It is important to never overload a tire, as this can lead to premature wear, handling problems, and even a blowout.

Load Index

• The load index is a numerical value that indicates a tire's maximum load carrying capacity.
• The higher the load index number, the greater the tire's load carrying capacity.
• For example, a tire with a load index of 87 can carry approximately 1201 pounds.
• The load index is typically stamped on the sidewall of the tire near the tire size information.

Load Ranges / Ply Ratings

• Tires are classified into different load ranges, which indicate their maximum load carrying capacity.
• The most common load ranges for passenger cars and light trucks are:
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• The load range is typically stamped on the sidewall of the tire near the load index.
• Light load tires are designed to carry less weight than standard load tires.
• Extra load tires are designed to carry more weight than standard load tires.

Maximum Load Inflation Pressure for a Tire

• A tire's maximum inflation pressure is the highest "cold" inflation pressure that the tire is designed to contain.
• The maximum inflation pressure for a tire will vary depending on the tire size, construction, and load range.
• It is important to never exceed the maximum inflation pressure for a tire, as this can lead to tire failure.
• The maximum inflation pressure for a tire is typically stamped on the sidewall of the tire near the load index.

The maximum load for a tire, load index, load ranges, and maximum inflation pressure are all important factors to consider when choosing tires for your vehicle. It is important to never overload a tire, exceed the maximum inflation pressure, or choose tires with a load range that is lower than the load requirements of your vehicle. By following these guidelines, you can help ensure the safety and performance of your tires.

It is important to choose tires with a load index and load range that are appropriate for your vehicle's weight and load requirements. Overloading a tire can lead to premature wear, handling problems, and even a blowout.

Here are some additional tips for choosing the right tires for your vehicle:

• Always consult your vehicle's owner's manual for the specific tire size, load range, and speed rating requirements for your vehicle.
• If you frequently carry heavy loads or tow a trailer, you may need to choose tires with a higher load range.
• If you live in an area with extreme weather conditions, you may need to choose tires with a higher speed rating or special features for snow or ice.
• It is always a good idea to have your tires rotated and balanced regularly, and to inspect them for signs of wear and damage at least once a month.