View Here : Tire Number Meanings
Is the width of the tire measured in millimeters from sidewall to sidewall. The first three-digit number in the tire size refers to the tire width. For instance, in a size P215/65 R15 tire, the width is 215 millimeters.
What do the numbers on tires mean? There's a massive amount of information branded on the sidewall of every tire ... but it's written in code. The tire size is just one small piece of this code. The tire size "P225/45R17 91V" may not mean much to the average person, but to tire geeks like us it speaks volumes.
Tires made in the United States have the DOT serial number located on the inside sidewall near the rim. Below is a description of the serial number. Starting with the year 2000, four numbers are used for the Date of Manufacture, the first two numbers identify the week and the last two numbers identify the year of manufacture.
…find the tire identification numbers? What do they mean? Refer to this drawing to see the various markings on a tire's sidewall. The tire identification number is shown middle left in the illustration and is essentially the tire's serial number. It is required when registering tires with…
As an example, if a tire size has two sets of numbers (6-12, 5.00-15, 11.2-24), then the first number (5.00-15) is the approximate width in inches, and the second number (5.00-15) is the rim diameter in inches.
The first number in a tire size, say 225, is the width of the tire in millimeters. This is pretty straight forward except that in the days of buying tires sized by the inch (remember 31/10.50x15), the first number was the height rather than the width.
There’s a lot to learn from the soup of letters and numbers on the sidewall of a tire, but deciphering all of that data takes some explanation. Knowing what the information means, a consumer can decide if a tire is ...
Finding the tire size meaning in metric measurements is a little more difficult and usually take a calculator to get exactly right. Example B : 305/70R17 On metric tires the first number is your width of the tire in millimeters. In example "B" this reads 305mm. There are 25.4 mm in one inch.
A tire's load index is a measurement of how much weight each tire is designed to support. The larger the number, the higher the load capacity. This is one of the most important numbers on your tire.
This number is the width of the tire in millimeters. This is the most important number to describe a tire’s contact patch. For example, a 215-width, 17-inch tire may look great, but all things being equal, a 245-width, 15-inch tire will out-corner it every time, because the contact patch is wider.