In the demystification of the sidewall of the tire code
Thus, you need new tires for your car or truck, but you know what to buy? What do all those alphanumeric codes on the tire means the sidewalls, in any case?
If you are in the market for new tires, you may simply want to replace worn tires with exactly the same, with the wheels. But you might consider upgrading. If you can read on the sidewall of the tire, filled with valuable information, which is an advantage over most people, and are ready to make an informed decision. So let us begin!
Marks Tire size (example: P215/65R15 89H)
Broken:
P = passengers
Other names
LT = Light Truck --
T = Temporary (spare tire)
215 is the width (mm) on the sidewall of the tire on the sidewall. Increased tire more grip, but the bad news is that you lose fuel economy, to hear more noise and the tires are not so good in the rain.
65 proportion
The aspect ratio of the ratio of sidewall height to tire width. Regarding the aspect ratio, the more that is the highest in the sidewall of the tire. High (60-75) is ideal for a quiet ride but causes howl again. Short (35-55) is better for handling - more than sports.
R indicates radial. This means that a number of pages belts under the tread.
More dates
B Bias belted
and
D Diagonal Bias
As a rule, but what do you see most often, is R.
15-wheel (or RIM) diameter in inches.
89 load index
Z velocity
Speed ratings indicate the maximum speed in ideal conditions. Higher than rates typically soft rubber tires and shorter UTQG tread life. Here are some of the most common speed ratings: R = 106, S = 112, T = 118, U = 124, M = 130, V = 149 W = 168, Y = 186-m Along with the speed rating, has a load index, which shows that the approximate weight of the tire can carry. Some of the total weight as follows: 85 = 86 = 1135 pounds 1168 pounds 87 = 1,201 pounds 88 = 1,235 pounds.
UTQG Rating
Tires for passenger cars rated UTQG (Uniform Tire Quality, the federal government), the price of the tread of tires by clicking on the life of wear, trains, and temperature resistance. In UTQG rating is usually compared to the brand and tire size are available in three ratings: treadwear, traction and temperature.
Treadware By default, this is 100 degrees. In the rating of 200 means that the indices of wear, as well as twice a tire rated 100
Traction grades from AA to a term C with AA is the highest class and C, ie tire brakes poorly on wet concrete and wet asphalt.
Degrees of temperature on the type of tire resistance and the ability to heat. These types of A (resists heat well), B (not as good as A) and P (passes minimum safety standards.) Keep in mind that big load, inflation of tires, as well as speed higher temperatures could lead to a reduction in bus .
It should be noted that this type of tire rims degrees measured under controlled conditions. Factors such as driving, road conditions, weather, etc., are not considerations, and may affect the performance of your tires.
DOT
DOT (Department of Transportation) indicates the tire in accordance with safety standards DOT. DOT is close to the identification or serial number - codes that designate where and when the tire.
You will also find more detailed information on the sidewall, including the nature and composition of the rim, the maximum cold inflation (PSI), and the maximum load in pounds.
As you can see the tires have a great deal of information. But it is not very complicated, what if you learn to read code.