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Look on the outer sidewall for the acronym “DOT,” which should be followed by a series of numbers. The last four digits are what you need to determine when the tire was manufactured. The first two numbers represent the week, and the second pair indicates the year.

## How can you tell how old a motorcycle tire is?

How to Tell the Age of Motorcycle Tires

- Locate the full DOT number on the sidewall of the tire. …
- Note the last four digits of the DOT number. …
- These numbers let you decode the date of manufacture of the tire. …
- Subtract the tire manufacture date from the current date to determine the tire’s age.

## Is there an expiration date on motorcycle tires?

Motorcycle tires are covered for the life of the tire, 4 years from the manufacturer Date Code or until the tread depth reaches 1/32″.

## How do you read a date code on a Nitto tire?

Light Truck Tires

The “LT” designation stands for “Light Truck.” These tires are intended for more severe use often seen on trucks and follow load and inflation standards established by the Tire and Rim Association (TRA). Load Index values and load capacities for these tires can be found in TRA manuals.

## How do I read tire codes?

The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.

## How do I know when my tires expire?

This partial code, boxed in yellow in Figure 1, is the most important piece of information about a tire. These last four digits of the DOT code represent the manufacture date of the tire. The last two digits refer to the year the tire was produced, and the first two digits identify the week number within that year.

## What do the numbers on motorcycle Tyres mean?

The first number indicates the width of the tyre in millimetres, taken from the widest point of the tyre. The second number indicates the aspect ratio (or height) of the tyre. This is represented as a percentage of the width of the tyre.

## How do you read the sidewall of a tire?

How To Read A Tire Sidewall

- TIRE SIZE.
- P identifies your tire as a Passenger Tire. …
- 225 identifies the tire section width, which is the measurement of the tire from sidewall to sidewall in millimeters. …
- 50 is the two-figure aspect ratio. …
- R indicates the construction used within the tires casing.

## What do the numbers and letters on tires mean?

The number is the load rating, or the amount of weight that it can handle. The letter is the speed rating, or the maximum speed the tire is built for. … Consult a load and speed index to find out what your tire’s specific rating means.