What does 165 65R13 mean?
R13 tires have a diameter of 21. The sidewall of the tire is 4. This means a 165/65R13 tire will make make 943 revolutions per mile, or 585 revolutions per kilometer. R13 tires have a diameter of 21. The sidewall of the tire is 4.A tyre size such as 165/70 R13 consists of four parameters: The first number up to the slash indicates the width of the tyre in millimetres. The most popular tyre widths are usually between 185 mm – 275 mm.
What is the 3% tire rule?
The 3% rule states that when replacing tires, the new tire’s diameter should not differ from the original by more than 3%. This guideline helps maintain proper vehicle performance, safety system functionality, and speedometer accuracy. As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.
What does 165 mean on a tire?
These numbers show the aspect ratio, which is the tire sidewall height in percentage to width of the tire. The width of Sidewall is directly proportional to the aspect ratio, a 70 aspect ratio means the sidewall height is 70% of 265mm while 65 aspect ratio means it is 65% of 265mm.This is height of the tyre side wall and is described in aspect ratio. It represents the height as 65% of the tyre width. R – Indicates the construction of the tyre. In this case radial construction.