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Mixing tires could cause you to lose control while
driving.
If
you mix tires of different sizes or types
(radial .and bias-belted tires), the vehicle may not
handle properly,'and you could have
a
crash.
Using tires of different sizes may also cause
damage to your vehicle. Be sure to use the same
size and type tires on all wheels.
It's
all right to drive with your compact spare,
though. It was developed for use
on
your vehicle.
Uniform
Tire
Quality
Grading
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance. (This
applies only to vehicles sold in the United',States.) The
grades are molded on the sidewalls
of
most passenger
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6-46