Tire wear index table - concept, decoding of markings
Content
Every manufacturer must now carry out a standard strength test. Tire wear resistance marking is a prerequisite for certification of automotive products. During production, special mixtures of plasticizers and lubricants are introduced into the rubber composition to increase strength and wear resistance. This increases the wear coefficient, increases the resistance of the material to deformation. And it is reflected in the form of a tradewear coefficient in the summary table of tire wear resistance provided for each model.
The condition of the car ramps determines road safety. The tire wear index is a special marker that is applied to the surface of the product so that the buyer can immediately make a choice according to the parameters.
Understanding Treadwear Tire Wear Index
Finding out the wear resistance of a tire is quite simple. This is the quality of the tread, which is denoted by the English word treadwear, and is applied to the top of the tire.
The concept was introduced by American test engineers. In the conditions of the test site, rubber was tested and a certain category was assigned to each model range. The practice proved successful and spread throughout the world.
Treadwear
Fixing the properties of the rubber tread not only helps car enthusiasts and tire sellers, but also allows regulatory authorities to get more information about the vehicle during seasonal inspections.
Every manufacturer must now carry out a standard strength test. Tire wear resistance marking is a prerequisite for certification of automotive products. During production, special mixtures of plasticizers and lubricants are introduced into the rubber composition to increase strength and wear resistance. This increases the wear coefficient, increases the resistance of the material to deformation. And it is reflected in the form of a tradewear coefficient in the summary table of tire wear resistance provided for each model.
What does Treadwear affect
The starting wear rate is 100 units. The coefficient, which is indicated on the tire, reflects the quality of grip of the tire and the road surface. Rubber, where the treadwear is more than 100, shows better maneuverability, provides high wheel stability.
How is the wear resistance index indicated (marking)
The designation of the wear resistance indicator traditionally goes next to the word treadwear. The tire wear index is deciphered relative to the norm. For example, a treadwear of 300 is high, and 80 means that the tire exhibits drop resistance well below the starting value.
What affects tire wear
Rubber testing determines the deformation resistance of tires in theory. And it involves driving on standard and high-quality roads, which is not always true in real life.
In practice, rubber aging is promoted by numerous concomitant factors:
- Frequent speeding. Sliding and hard braking results in increased compression. This provokes a loss of elasticity, which affects the general condition of the slopes.
- Thermal properties of the road. Hot asphalt accelerates the aging of rubber twice as fast.
- Excessive load. Driving cars loaded beyond the limit often affects the condition of the tires. The rubber sags, the so-called flaking wear appears: cracks appear in the upper part due to the load.
- Driving over potholes and uneven road surfaces. Hitting a wheel in a hole is a common occurrence. The regular practice of operating the machine on a bad road leads to swelling or hernia on the slopes. This is how car owners call the phenomenon when the pattern on the tread changes or completely wears out.
What does tire index mean
In addition to those listed, untimely “changing shoes” often leads to wear. That is, trips in winter with a kit designed for summer, and vice versa.
Tire wear index table by manufacturer
For each manufacturer, the wear resistance index is a mandatory reliable classification that must comply with GOST, that is, the quality standard.
Tire wear index table with average values for leading manufacturers.
| Manufacturer | Level of |
| Yokohama | 420 |
| Michelin | 400 |
| Hankook | 350 |
| Kumho | 370 |
| Marshal | 350 |
| Matador | 300 |
Tire manufacturer Pirelli puts durable tires on the market with an index of 60, but this does not mean that tires cannot be used. You just need to keep in mind that they are not suitable for urban use. The main purpose of such kits is driving in quiet, calm weather on country roads.
Correspondence table of speed and load indices
When buying, you should focus on a combination of qualities. Purchasing tires with more than 450 treadwear, but at the same time violating the rules of use, is a waste of money.
In addition, it should be borne in mind that the starting unit, which is equal to a hundred, is designed for a run of 48 thousand kilometers. This means that after overcoming this mark, the rubber will be completely worn out. You will have to replace the slopes earlier, without waiting for complete aging.
Quality tires with a good wear resistance definition will help you feel more confident on the road and prevent a traffic accident.
