Contrary to popular belief, you can't judge a tire by
its cover. Researchers and most experts agree that along with
tread depth and proper tire maintenance, tire age is also
crucial to your safety on the road.
This tire was bought as new -- it has never been on the road --
but was nearly 14 years old when purchased. Despite its deep
treads, this tire's inside layers have been slowly decomposing
and drying out, what experts say make it like "a ticking time
bomb."

Attorney Roger Braugh shows Brian Ross that aged tires have a
higher potential for dramatic tread separation, which in many
cases has led to tragic endings for unsuspecting motorists.
Braugh says his lawsuits on behalf of dozens of victims have
uncovered a pattern of corporate neglect and government inaction
on the issue of aging tires.

This graphic breaks down the various codes in the Department of
Transportation's serial number for tires. A cryptic code of four
numbers at the end of the 12-digit DOT serial number can tell
the consumer which week and year a tire was manufactured. Can
you tell when your tires were made?
This tire's DOT code indicates that it was made in the 41st week
of 1994. Tires made in the 1990s have three numbers at the end
of the DOT code, while tires made after 2000 have four numbers.

This tire is more than seven years old. It was made in the 13th
week of 2001. According to experts like Sean Kane, who runs a
private auto safety research firm, tires older than six years
get increasingly more dangerous regardless of how long they've
actually been on the road.

ABC News' "20/20" sent producers undercover, rigged with hidden
cameras, to tire retailers all over the county to see if any old
tires are being sold as new. The undercover producers found half
a dozen tires older than six years at this Sears in Jersey City,
N.J. -- some were even older than a decade.

ABC News affiliates all over the country did their own
investigations collaborating with "20/20" and the Brian Ross
Investigative Unit for this report. In Indianapolis, WRTV-TV
found old tires at three tire distributors. This tire was made
in the 31st week of 2001.

In San Francisco, KGO's reporters found a nine-year-old tire,
made in the 45th week of 1999, sold as new at a tire dealer.

And in the New York area, our undercover "20/20" shoppers found
several Sears stores selling tires older than six years. Sears
says it is unusual to have old tires in their inventory and told
ABC News, "Consistent maintenance, proper inflation and regular
inspection for tread wear patterns and damage are the keys to
good tire performance. For consumers who are concerned about the
age or condition of their tires, it is recommended they let us
evaluate their tires regularly, which we'll do free of charge."

At another Sears store, we were told that a tire made 12 years
ago, in the 46th week of 1996, was perfectly safe. Sears said,
"We follow an inventory process of first in, first out, and we
turn our tire inventory an average of more than three times a
year. We note that there is a difference of opinion in the tire
industry...about the service-life limits of tires. The safety of
our customers is a top priority for Sears, and we'll continue to
work with all interested parties to push for a consensus on tire
service limits."
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