How to read information on your tire

All the abbreviations look so complicated at the beginning, but they are actually not as difficult as you thought. You will be surprised about how simple it is. Here are tips on how to read information on a tire.

 

1. Contents

   • P – Vehicle Class
   • 215 – Tire Width
   • 65 – Aspect Ratio
   • R – Fabric Construction
   • 15 – Rim Diameter Code
   • 95 – Load index
   • H – Speed Rating
   • M+S – Severe snow condition
   • DOT MALS ABC036 – DOT Serial Number
   • Tire Ply Composition and Materials Used
   • 220 – Treadwear
   • A – Traction
   • A – Temperature
   • 1300 lbs – Max Load
   • 35 psi – Max Air Pressure

   P – Vehicle Class

“P” stands for Passenger Car

“LT”: Light Truck

“SP”: Special Trailer

“T”  : Temporary

 

2. 215 – Tire Width

The width measures the widest point of the tire in millimeters.

 

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3. 65 – Aspect Ratio

The tire height to total width ratio, expressed as a percentage. For example, this aspect ratio of 65 means that the tire’s section height is 65% of the tire’s section width (215 mm)

 

4. R – Fabric Construction

“R” stands for radial construction. Most vehicles ride on radial.

“B” means belted bias construction.

“D” stands for diagonal bias construction.

 

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5. 15 – Rim Diameter Code

The last dimension listed in the size is the diameter of the wheel rim, which is measured in inches.

 

6. 95 – Load index

The load index shows how much weight the tire can support when properly inflated. In this case, the 95 identifies the tires ability to carry approximately 690 kg.

 

7. H – Speed Rating

The speed rating will tell you the maximum allowed speed the tire can sustain under its recommeded loading capacity. For example, the “H” is equivalent to a maximum speed of 210 km/h.

 

8. M+S – Severe snow condition

“M+S” stands for “mud and snow”, meaning the tire meets the Rubber Manufactures Association guidelines for mud and snow tires.

 

9. DOT MALS ABC036 – DOT Serial Number

This serial number is birth certificate of the tire.

 

10. Tire Ply Composition and Materials Used

Tread ply and sidewall ply information, including tire ply composition and materials used.

 

11. 220 – Treadwear

The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test track.

 

12. A – Traction

The traction rating measures a tire’s ability to stop on a straight and wet surface under controlled condition. Traction grades from highest to lowest, are AA, A, B and C.

 

13. A – Temperature

The temperature rating measures a tire’s resistance to heat generation under normal operating conditions at recommended inflation pressures. Temperature grades from lowest to highest are C, B and A.

 

14. 1300 lbs – Max Load

This is the tire’s maximum load-carrying capabilities when the tire is inflated to its maximum inflation pressure.

 

15. 35 psi – Max Air Pressure

This number shows the maximum operating inflation pressure of the tire.

 

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