If you the beginning driver, then to you was necessary to face inscriptions on tires more than once. And that mean these figures on tires, it is necessary to understand.
Let's try to consider from all known means of transport the car and to look on concrete examples what is meant by figures on car tires.
It is possible to distinguish the following types from various markings: American and European. Today the most popular and widespread is the European type of tires.
So, for a start it is necessary to consider a tire with the following figures and to understand interpretation of figures on tires.
Figures on tires and their value
Let's sort in more detail all subtleties of value of figures on car tires.
396/70 R16 90H, where:
- 396 – tire width indicator;
- 70 – the ratio between width and height, usually, is expressed as a percentage;
- R – tire radial (surrounded);
- number 16 is designation of internal diameter of a tire;
- 90 – shows maximum permissible load, to it there correspond 580 kg on each wheel;
- N-index of speed.
Now, when it was succeeded to deal with interpretation of figures, it is possible to pick up correctly on the car the size of tires.
How date of production of the tire is designated?
Probably, not many are interested in a similar question. And in vain! Tires also have a validity period. So, how it is possible to learn date of production of the tire? It can be identified from oval space in which middle there are 4 figures easily. It is necessary to consider value of figures on car tires.
For example, 3706, 37 – week of production, 06 – year of production of this product.
The index – loading coefficient.
This parameter of the tire is usually designated by from 0 to 130. To each figure there corresponds a certain loading, sometimes loading capacity is specified directly on the tire.
Color tags on tires
Besides figures, on tires also marks of a certain color meet – they are of great importance. Four colors, often, are applied to marking of the tire: blue, yellow, white and red.
Most often the tag of white color (the symbols concluded in a small circle) meets. Such marking is put with the person who checks compliance to norms of the released product.
Red marking has a double-meaning. If tires are marked in this way, then apply them to a factory complete set of a car. The small circle of red color can also indicate a car the heaviest part of the building.
Yellow marking – an easy part of a tire. Such tag is important for workers of mounting as it helps to facilitate process of balancing of wheels.
American and European systems of marking
It is necessary to consider in more detail the systems of marking used in America and Europe. The American tire is called still inch, and European – metric.
Parameters of the tire are presented by metric marking. For example, 225/67R18 98Q:
- 225 – tire width (mm.);
- 67 – tire series;
- R – tire of a radial design;
- 18 – landing diameter (inches;
- 98 – index of loading of the tire;
- Q – index of speed of the tire.
The American marking is presented by such figures 25x13.50R16 LT 108Q:
- 25 – outer diameter of the tire (inches;
- 13:50 – tire width (inches;
- R – tire of a radial design;
- 16 – landing diameter;
- LT is category of tires for low-tonnage trucks and buses;
- 108 – index of loading;
- Q – index of speed of the tire.
Now there will be no problems when choosing tires. Motorists, even if also beginners, thanks to the gained knowledge of what is meant by figures, color tags and letters on tires it is possible to pick up the necessary size.
"