Ford Thunderbird Owner's Manual page 177

NOTE: Extended use of other than
conventional spare tires on a
Traction-Lok rear axle could result in a
permanent reduction in effectiveness.
This loss of effectiveness does not
affect normal driving and should not
be noticeable to the driver.
If you use the temporary spare tire
continuously or do not follow these
precautions, the tire could fail, causing
you to lose control of the vehicle, possibly
injuring yourself or others.
When you drive with the temporary spare tire,
DO NOT:
exceed 50 mph (80 km/h) under any
circumstances.
load your vehicle so that it is heavier than
the maximum vehicle load rating listed on
the tire decal.
tow a trailer.
use tire chains on this tire.
try to repair the temporary spare tire or
remove it from its wheel.
use the wheel for any other type of vehicle.
drive through an automatic car wash with
this tire. Because the temporary spare tire is
smaller than a conventional tire, it reduces
the ground clearance. Your vehicle may get
caught in the rails and it could be damaged.
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