Chevrolet 2010 Cobalt, Owner'S Manual

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If you choose to use winter tires:
. Use tires of the same brand and tread type on all
four wheel positions.
. Use only radial ply tires of the same size, load
range, and speed rating as the original equipment
tires.
Winter tires with the same speed rating as your original
equipment tires may not be available for H, V, W, Y, and
ZR speed rated tires. If you choose winter tires with a
lower speed rating, never exceed the tire's maximum
speed capability.
Tire Sidewall Labeling
Useful information about a tire is molded into its
sidewall. The examples below show a typical
passenger vehicle tire and a compact spare tire
sidewall.
Passenger (P ‐ Metric) Tire Example
(A) Tire Size
:
The tire size is a combination of
letters and numbers used to define a particular
tire's width, height, aspect ratio, construction
type and service description. See the
“ Tire Size ”
illustration later in this section for more detail.
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