Light Truck Tire Load Rating Chart

The speed rating is identified as a part of the tire size designation or the tire s service description together with the load index.

Light truck tire load rating chart.

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. 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. S an s speed rating indicates the tire has been approved for speeds up to 112 mph 180 km h under optimal conditions. 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.

Passenger tires feature named load ranges while light truck tires use load ranges that ascend in alphabetical order letters further along in the. 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. The values of load index vary for the passenger tires and the light truck tires range usually from 70 to 110. 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. Both have a 4 ply rating but the extra load can support additional load at up to 42 psi while the standard load is 36 psi. Still you should always choose tires with a speed rating that is higher than the top speed of your vehicle. The speed rating system as it is used today was developed in europe.

The load range ply rating branded on a tire s sidewall identifies how much load the tire is designed to carry at its industry specified pressure. Each tire model comes in many different sizes speed ratings and load ratings. Light truck tires have two load indexes on the sidewall of the tire unlike passenger tires which only have one. A tire s load rating is specified by one of the various tire industry standardizing organizations around the world.

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. The latest load and inflation table standards michelin continually updates its product information to reflect changes in industry standards so you can stay informed. 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. 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.