Not certain about bike tires, but light truck and passenger car tires
are "sorta" coded by the last three numbers in the sequence after "DOT"
by week of the year and last digit of year. Hence DOTxxxxxx025 would
mean it was built second week of 2005, 1995, or 1985. That's why I say
"sorta" coded. I vaguely recall that of late they might have changed to
a four-digit code so at least you know which friggin' decade the tire
was made. I'll let you know if I find out more. OTOH, maybe a google
search will get what you need.
Benn
----- Original Message -----
From: "Jon Wennerberg" <jon@infodestruction.com>
To: <land-speed@autox.team.net>
Sent: Tuesday, August 02, 2005 6:47 AM
Subject: M/C tire age
> Hey, someone, please refresh my memory. While packing for the trip to
> the Salt I found a spare rear tire for my bike. I'd like to have it
> along in case I need it -- but don't remember how to read the date
code
> so I know if I'll be allowed to use it. What's the secret? And just
> how old a tire are we allowed to use -- 5 years, or was it six?
>
> Jon Wennerberg
> Seldom Seen Slim Land Speed Racing
> Marquette, Michigan
> (that's 'way up north)
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