[6pack] Tire age

[Robert McBride]

The DOT Code is an alphanumeric character sequence molded into the sidewall of
the tire for purposes of tire identification. The DOT Code is mandated by the
US Department of Transportation. The DOT Code is useful in identifying tires
in a product recall.

The DOT Code begins with the letters "DOT" followed by a two numbers or
letters plant code that identifies where it was manufactured. The last four
numbers represent the week and year the tire was built. A three-digit code was
used for tires manufactured before the year 2000. For example, 178 means it
was manufactured in the 17th week of 8th year of the decade. In this case it
means 1988. For tires manufactured in the 1990s, the same code holds true, but
there is a little triangle (N) after the DOT code. Thus, a tire manufactured
in the 17th week of 1998 would have the code 178N. After 2000, the code was
switched to a 4-digit code. Same rules apply, so for example, 3003 means the
tire was manufactured in the 30th week of 2003

  ----- Original Message -----
  From: Bob
  To: John North ; Triumph 6 Pack
  Sent: Sunday, April 27, 2008 10:02 PM
  Subject: Re: [6pack] Tire age


  I contacted Michelin with the exact same series numbers. Redline tire with
  tube marked made in France?
  My tire is FHTJA8NX 015.... 01 is month 5 is year - 1985.
  Regards,
  Bob
  ----- Original Message -----
  From: "John North" <johncnorth at gmail.com>
  To: "Triumph 6 Pack" <6pack at autox.team.net>
  Sent: Sunday, April 27, 2008 3:34 PM
  Subject: [6pack] Tire age


  > I hear you can tell the year of manufacture from the DOT numbers...
  > Mine are Michelin X with DOT FHTJ A8NX 111, a second has 061 and a
  > third 152 at the end instead of 111.   I know for sure these are at
  > least 7 or 8 years old, which means they should be replaced, but for
  > curiosity, how old are they?
  >
  > John North
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