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Run: PV
NEWS Automotive, 3/18/04
Talking Tires and
Batteries
by Dave
Carney
Let’s talk tires
and batteries. Both of these items are
essential to the continued operation of
your car, and, just like a bunch of
bananas, they are both
perishable. Consequently, you will have
to replace them periodically as they
wear out or die. To help simplify the
replacement tasks, I have listed some
handy tips below.
When shopping for
new tires, the first thing you need to
do is to match the new tire size to the
tire that is on your car. Begin by
looking on the sidewall of your tire
where you will find a number, i.e.
P205/65R15. The “P” stands for
passenger. The 205 is a metric
measurement of the actual width of the
tire that is on the road. The 65 is a
metric measurement of the height of the
tire from the road to the bottom of the
rim. The “R” stands for radial. (Most
tires today are radial as this is a
tried and true process for building the
strongest tires). The “15” is the rim
size, or the inside diameter of the rim.
| All tires are rated
by the Department of Transportation.
The rating is called a DOT rating, and
you will find the DOT rating on the
sticker of every new tire. The DOT
rating includes three ratings, namely
tread wear, traction and temperature. I
call them the three Ts. |
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The tread wear has
a numeric value. A comparative number
for most cars is in the high 300s, i.e.
360. The traction and temperature of
the tire are rated AA, A, B, or C.
These ratings are based on traction and
temperature tests, respectively. The
higher the letter rating, the higher the
quality of the tire. Like most things
in life, you get what you pay for, so
shop wisely.
Batteries are
basically like power plants. The more
expensive the battery, the more power it
has, and the longer its warranty
period. Most batteries have a five, six
or seven year warranty. Interestingly,
batteries really do last very close to
the actual warranty time. In the event
the battery fails while it is still
covered by warranty, the warranty is
prorated. If it lasts just half as
long, you’ll get 50 percent off a
replacement battery.
One thing to be
aware of is that a marginal battery, or
one that is near the end of its warranty
period, will go bad anytime there is a
spike in the temperature, up or down.
For instance, a trip from Palos Verdes
to either the mountains or the desert,
will cause a marginal battery to fail.
A battery check should be part of every
routine service you have performed on
your car.
Questions? Please
feel free to give me a call at
310.373.7676. Our new Automotive Center
is located on Hawthorne Blvd., at Newton
Street in Torrance. Hours are 8am to
6pm, Monday through Saturday.
Happy, safe
driving!
Dave Carney |