# How to read motorcycle tire date codes

## How do you read the date code on a Pirelli tire?

Just to the right of “DOT” (going clockwise) are a series of letters and numbers, followed by an encircled group of four, tightly spaced numbers – these are the numbers you need. The first two numbers represent the week of manufacture, the last two numbers indicate the year.

## Do motorcycle tires have date codes?

Tires don’t have a “use by” date stamped on them like perishable foodstuffs because there are a lot of variables that determine the rate at which a tire degrades. However, tires do have a four-digit number stamped on the sidewalls indicating the week and year they were manufactured.

## How do you read the date code on a TYRE?

The last four digits of this code tell you when your tire was manufactured. The first two numbers indicate what week of the year it was made (out of 52 weeks per year), and the second two numbers represent the year. For example, 5200 would reveal that a tire was manufactured during the 52nd week of the year 2000.

## When did they start putting date codes on tires?

The law goes back to the late 1960’s. I’m sure there was a transition period, but I can’t tell you when the drop dead date was – but by the time I started working in the tire industry (1971), it was fully implemented everywhere.

## How do you read tire numbers?

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.

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## How do you tell what year a motorcycle tire was made?

Decode the tire manufacture date using the four-digit number. The first two digits are the week of the year the tire was manufactured and the second two digits are the year of manufacture. For example, if the last four of the DOT number is 4008, the tire was manufactured in the 40th week of 2008.

## Why are motorcycle tires so expensive?

The manufacturers need to make a profit after R&D and mold making and the like so each tire is more expensive because they sell less of them than car tires.

## What is the oldest tire you should buy?

Most tire companies recommend replacement between 6 & 8 years due to material age. Older tires may hold air just fine, but may lose traction and get damaged more easily. No more than a year or two, tops. This is a very good and important question you should ask when purchasing new tires.

## How do you date old tires?

Most DOT numbers have between 6 and 8 letters/numbers mixed, and then the date code follows that. From the year 2000 on, the date code has been 4 digits, the first two are the week of manufacture and the second two digits are the year of manufacture.