There is so much to talk about when it comes to tires. For this post we are just going to talk about a couple.
We bet that 90% of you BKM's don't have a clue what all those designations on the sidewall are? Lets see if we can help you out.
1. This section is probably the most talked about yet least correctly identified. Tire size.
LT = light truck application / 235 = tire width in mm / 85 = sidewall height as a percentage of the tire width / R = radial tire construction / 16 = wheel rim diameter measured in inches.
2. Mounting direction? Not all tires have this but on an asymmetric tire it is important to know which way the tire should be mounted. Directional tires would have an indicator to show the direction of rotation. Just say yes and nod your head.
3. Maximum load and tire air pressure the tire can safely carry
4. Tire pattern name
5. Materials that the tires are made from
6. European ECE type approval marks and numbers. This proves that the tire has been tested and passes all European safety standards. The S = sound for having complied with EC noise directive
7. Load Index = the numbers before the letter indicate the maximum load a tire can carry and there is an index chart that correlates to it
8. Speed index = the letter that follows the load index indicates the maximum speed the tire can safely handle and there is also a speed chart that correlates
9. Country where tire was made
10. Brand, manufacture
11. Tire wear indicator, legal point when tire needs to be replaced
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