Light Truck Tire Load Rating Chart

A tire s load rating is specified by one of the various tire industry standardizing organizations around the world.

Light truck tire load rating chart.

Tire speed rating or the speed index symbol specify the top speed at which the tire can carry a load corresponding to its load index under service conditions specified by the manufacturer. All tires big and small have a recommended load rating. Load ranges per vehicle whether you drive a regular passenger vehicle a light truck or even a heavy truck each will be riding on tires that have been specifically constructed to hold the weight of. To select the right load and inflation table for your commercial tires locate your tire size then match your tire s sidewall markings to the table with the same sidewall markings.

The speed rating is identified as a part of the tire size designation or the tire s service description together with the load index. The latest load and inflation table standards michelin continually updates its product information to reflect changes in industry standards so you can stay informed. R speed tires are rare but can be found on some heavy duty light truck lt tires as well as studdable and studless winter tires. S an s speed rating indicates the tire has been approved for speeds up to 112 mph 180 km h under optimal conditions.

When it comes to light trucks the load rating is perhaps more important than the speed rating as trucks don t reach high top speeds. Light truck tires have two load indexes on the sidewall of the tire unlike passenger tires which only have one. This is true whether the tire is a passenger type or light truck type tire said bob toth director industry relations for goodyear. This is because light truck tires are often used on vehicles with dual rear wheels.

If you see ply rating and load range on a chart they both represent the tire s maximum load carrying capacity at maximum allowable air pressure. The values of load index vary for the passenger tires and the light truck tires range usually from 70 to 110. Speed symbol the speed symbol also known as the speed rating denotes the maximum speed at which the tire can carry the load indicated by load index li under service conditions specified by a tire manufacturer. Passenger tires feature named load ranges while light truck tires use load ranges that ascend in alphabetical order letters further along in the.

The speed rating system as it is used today was developed in europe. If your tires indicate higher max air pressures than the max load carrying air pressure of the tire a tire expert may need to weigh in to make sure the tire being used can handle the weight requirements of the vehicle. Still you should always choose tires with a speed rating that is higher than the top speed of your vehicle. Each tire model comes in many different sizes speed ratings and load ratings.