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TIRE SIZE AND DESCRIPTION
It’s good to know your tire size to help make an
informed decision. It can be found in the owner’s
manual, on the tire placard, which can be found on the
driver’s doorjamb or in the glove compartment, and it
can also be found on the tire sidewall.
Can’t find it? No problem, at Speedy we’ll help to make
sure you get the right tire for your vehicle.
What do all those numbers mean? They indicate the size,
type, construction, wheel rim diameter, height, load and
speed rating of the tire recommended for your vehicle.
Passenger car tires also have a grade as part of the
uniform tire quality grading system (UTQG). This
information system provides tread wear, traction and
temperature results based on government test procedures. |
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Lets take a look at one of Speedy Muffler, Brake
& Wheel’s most popular tire, the BFGoodrich Control
Plus. For this exercise we have chosen the Control Plus
P175/70R14 84S tire with a UTOG rating of 600 A B
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P |
Passenger tire (LT for light truck) |
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175 |
Tire width in millimeters. |
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70 |
Height of the tire as a percent of the width of
the tire. In this case it would be 175 x 75% =
131.25 mm. The smaller the height of the tire
the wider the tire is. |
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R |
Represents the tire construction, which in this
case means the tire is a radial construction. |
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14 |
The rim diameter in inches. |
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84 |
This number is the load index, which indicates
the maximum amount of weight the tire is
designed to support, in this case 500 kg. |
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S |
Represents the speed rating for the tire, which
stands for the maximum safe driving speed for
the tire. Speed ratings range from ìPî to ìYî,
which represents 150 to 186 kilometers per hour. |
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600* |
Represents the tread wear designation. The
higher the number, the longer the tire will
last. |
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A* |
Is the traction rating of the tire. Tire
traction is rated AA, A, B and C with AA being
the highest rating. |
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B* |
Represents the tire temperature rating. ìAî
means the tire has a high resistance to heat;
ìBî means the tire has a medium resistance to
heat and a ìCî index indicates the tire only
meets the basic safety standard. Excessive heat
buildup can cause the tire to wear out faster. |
* UTOG (Passenger cars only) |
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A Speedy Muffler, Brake & Wheel expert can
help you make sense of
this information and help you pick the right tire
for your driving needs.
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News
You can depend on Speedy Muffler, Brake & Wheel for the best
while you wait service, outstanding value and the assurance we
stand behind what we do.
We encourage you to take the time to browse our site. Learn more
about today's exhaust, brake and suspension systems and what the
warning signs are when something needs servicing. There is an
auto facts and tips section that will help you choose the right
repair facility as well as valuable roadside tips.
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