how to read tire age

Here is more information than you would ever want to know, but should:


http://en.wikipedia.org/wiki/Tire#Markings

Old-Biscuit wrote:

sch911 wrote:

Old-Biscuit wrote:
That is only part of the DOT ID number........full ID number is 10 to 12 digits long.

The rest of number will be on other side of tire.
The last 4 digits of that ID number will be mfg. dates (since 2000)
OR the last 3 digits will be mfg date (prior to 2000)

Look for complete number on inside sidewall.

4 digit---first 2 are week, last 2 are year (3711---37th week of 2011)
3 digit---first 2 are week, last 1 is year (378---37th week of 1998)

THE EXAMPLE I GAVE WAS: "DOT CC9L YYY1105" which is the complete and full DOT number. You may have missed it at the beginning of my post.

Didn't miss it......was answering OPs question and posted shortly after your post..was typing post at same time you were.
Chill out.......

Someone's overly sensitive....Blame it on the cold weather...global warming...I'm sure it's Obama's fault....:B:B....Dennis

sch911 wrote:

Old-Biscuit wrote:
That is only part of the DOT ID number........full ID number is 10 to 12 digits long.

The rest of number will be on other side of tire.
The last 4 digits of that ID number will be mfg. dates (since 2000)
OR the last 3 digits will be mfg date (prior to 2000)

Look for complete number on inside sidewall.

4 digit---first 2 are week, last 2 are year (3711---37th week of 2011)
3 digit---first 2 are week, last 1 is year (378---37th week of 1998)

THE EXAMPLE I GAVE WAS: "DOT CC9L YYY1105" which is the complete and full DOT number. You may have missed it at the beginning of my post.

Didn't miss it......was answering OPs question and posted shortly after your post..was typing post at same time you were.
Chill out.......

Only on ONE sidewall is the full DOT number-- could be facing inward. Generally, the last 4 digits are in a separate area, as that part of the mold is changed every week.

For any tire produced since 1/1/2000, the last 4 digits are the WEEK and YEAR.

thanks guys.

Old-Biscuit wrote:
That is only part of the DOT ID number........full ID number is 10 to 12 digits long.

The rest of number will be on other side of tire.
The last 4 digits of that ID number will be mfg. dates (since 2000)
OR the last 3 digits will be mfg date (prior to 2000)

Look for complete number on inside sidewall.

4 digit---first 2 are week, last 2 are year (3711---37th week of 2011)
3 digit---first 2 are week, last 1 is year (378---37th week of 1998)

THE EXAMPLE I GAVE WAS: "DOT CC9L YYY1105" which is the complete and full DOT number. You may have missed it at the beginning of my post.

That is only part of the DOT ID number........full ID number is 10 to 12 digits long.

The rest of number will be on other side of tire.
The last 4 digits of that ID number will be mfg. dates (since 2000)
OR the last 3 digits will be mfg date (prior to 2000)

Look for complete number on inside sidewall.

4 digit---first 2 are week, last 2 are year (3711---37th week of 2011)
3 digit---first 2 are week, last 1 is year (378---37th week of 1998)

EXAMPLE: (DOT CC9L YYY1105)

U.S. DOT & Safety Standard Markings
DOT Markings Tire Graphic

The "DOT" marking indicates that the tire meets or exceeds the U.S. Department of Transportation's safety standard for tires.

Manufacturer Plant Code - "CC"
The first two letters following the DOT marking are codes to identify the manufacturer of the tire and the manufacturing plant.

Tire Size - "9L"
The third and fourth characters following the DOT marking are codes representing the tire size.

Brand Characteristics - "YYY
The final three or four letters are codes representing other significant characteristics of the tire as determined by the manufacturer.

Manufacture Week - "11"
The first pair of digits identifies the week the tire was manufactured. In this case, the tire was manufactured in the 11th week. The number 01 would indicate the first week of January, whereas the number 52 would indicate the last week of December.

Manufacture Year - "05"
The second pair of digits identifies the year that the tire was manufactured, in this case 2005.


Source

I don't believe that that code style has been used in over ten years. Guess it is time to replace them.