Numbers on the car's tire
Rubber is one of the most vital parts of any car. Any problems or problems in the car tire can lead to very serious damage to the car and its occupants. For this reason, the proportion of tires and cars as well as its health is very important.
The car's tire is just a part of a car that comes directly with the ground and somehow car weight pressure, road friction tolerance and even driving and kilometers. It takes the car by the car. So choosing the right tire for the car is one of the most important things that drivers should pay attention to.
Since just looking at a black ring one hand does not get much information about car tires, tires for each Tire and tires are carved on it. Any number and lettuce engraved on the tire represents a specific feature.
Tires and tire sizes
Suppose a phrase like P220/80R16 80s is written on the car's tire. Each of these letters and numbers represent the characteristic of the rubber.
P, the first sign on the rubber
The first letters written on the car tire specifies the car class for which the tire is suitable for.
p, which is derived from the word Passenger, which means rides, represents the tire suitable for passenger cars.
for passenger cars, pickups and SUVs use the term LT, which shows the lightweight car tire.
the letter T eng beented on the car's tire means its temporary.
Rubber width
The first number after the letter P, which plays a role on the car's tire, represents the width or width of the car's tire.
This number is in millimeter.
The height of the rubber than the width
After a three -digit number that indicates the height of the tire compared to the width, a slash or sign is written and then one is another number that specifies the height of the tire.
Obtaining this ratio should be multiplied by the width of the tire by 2 and then by 2 to obtain the tire height.
This number is the more fleshy tire.
Automotive Rubber Index
The second carved letter on the tire that comes after the percentage of the tire shows the rubber construction index.
the letter R represents the radius of the tire that may be in heavy and old cars with letters B and B. D shown. (Letter B, which means there is a metal tire and D expresses the tire diameter). .
Freight Index
The load index means how much weight can bear the weight alone. Using the load index number you should refer to the index table to obtain the tolerable tire weight.
Tireable speed
The letter S shows the speed that the tire is capable of tolerating.
letters S, T and H are also written on tires, which are mostly used for sports cars.
The letters H also indicate speed tolerance of 1, and if the car speeds up, the tire will not be supported and damaged.
letters W and Y can each And support 2 km / h.
Compound m and s on tires
Tire on which the M + S composition is written is suitable for moving on snow and mud, which is not only for winter tires and many other tires have this capability.
appropriate tires The winter has a snowy mountain mark and is recognizable.
The date of production and expiration
Rubber, like all products, has a useful life and expiration date. The date of production of tires is written by the combination of the week and year; For example, the number 2, the tire, was produced in the 16th week of the year.
The use of tires that have been 5 years since its production date is a past date. If the rubber expiration date is over, it will pose a serious risks for car occupants.
Rubber loading limit
Each tire has the ability to withstand a specific weight and more pressure will cause tire damage. It is written on each numerical tire that indicates the maximum weight that a tire can withstand.
is a number of numeric personal car loading. The number 2 is about 2 kg.
should never be used with a lower loading tire than the factory recommended for a car.
Making compositions of rubber
Tires, although made of specific compounds, may make changes in some of these compounds to increase the quality of the tire. The tires are also engraved on its constituents.
Maximum wind pressure to rubber
Inserts a numeric in front of the Max Press that indicates the maximum wind pressure that a tire can withstand.
The number inserted on the tire, the recommended wind pressure is not in normal.
Flash on the tire
Flash on the tire shows the direction of the car. Tire tread is such that it spreads around when moving in the water and installing the tire (based on the arrow on it) causes its ability to move in the water.
