What does the last number in a tire code mean?
The number in the circle or rectangle denotes the country code of the government that granted the type approval. The last number outside the circle or rectangle is the number of the type approval certificate issued for that particular tire size and type. Explanation of tire codes
Where do you find the dot code on a truck tire?
However, some pickup trucks and SUVs use the Light Truck Numeric or Light Truck High Flotation system. The DOT Code is an alphanumeric character sequence molded into the sidewall of the tire and allows the identification of the tire and its age. The code is mandated by the U.S. Department of Transportation but is used worldwide.
How to tell the diameter of a light truck tire?
Some light-truck tires follow the Light Truck Numeric or Light Truck High Flotation systems, indicated by the letters LT at the end instead of the beginning of the sequence, as follows: The tire diameter is given for High Flotation tires and omitted from Numeric tires. 2-digit number: The diameter of the tire in inches. x: Separator character.
What was the ratio of tire width to diameter?
Prior to 1964, tires were all made to a 90% aspect ratio. Tire size was specified as the tire width in inches and the diameter in inches – for example 6.50-15. From 1965 to the early 70’s, tires were made to an 80% aspect ratio. Tire size was again specified by width in inches and diameter in inches.
Which is the first number on a metric tire?
The first number on a metric tire is the width in millimeters. Divide this number by 25.4 to get the inch equivalent as there is 25.4 mm in 1 inch. The third number generally preceded by an “R” is the wheel diameter. The sidewall or aspect ratio are used in metric tire sizes to determine the overall height of a tire.
What is the number on the side of a tire?
B: TIRE WIDTH The three-digit number following the letter is the tire’s width (from side to side, looking at the tire head on) in millimeters. Also called the section width, this measurement is taken from outer sidewall to inner sidewall.
The number in the circle or rectangle denotes the country code of the government that granted the type approval. The last number outside the circle or rectangle is the number of the type approval certificate issued for that particular tire size and type. Explanation of tire codes
Where do you find the dot code on a tire?
However, the identification information is usually on the inner sidewall of tires. At Tires Easy, we believe that the tire warranty should begin from the date of purchase, not the DOT Code. If you purchase new tires today, and the DOT Code was a year ago, your warranty will still begin on the purchase date, not the manufacture date of the tire.