Ford Mustang Owner's Manual page 242

The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in
combination, can cause heat buildup and
possible tire failure.
Driving too fast for conditions creates the
possibility of loss of vehicle control.
Driving at very high speeds for extended
periods of time may result in damage to
vehicle components.
Snow Tires and Chains
The 15 in. and 16 in. tires on your vehicle have
all-weather treads that provide traction in rain
or snow. However, during the winter months in
some climates, you may need to use snow tires
and occasionally chains for your tires.
Snow tires must be the same size and
grade as the tires you currently have on
your vehicle.
For your Mustang GT models equipped with 17
in. tires, to achieve the best traction during snow
and ice conditions, purchase 245/45ZR17 mud
and snow tires.
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