Cadillac 2011 CTS Coupe Owner's Manual page 428

Driving with more than one
compact spare tire at a time could
result in loss of braking and
handling. This could lead to a
crash and you or others could be
injured. Use only one compact
spare tire at a time.
If your vehicle is equipped with a
compact spare tire it was fully
inflated when the vehicle was new, it
can lose air after a time. Check the
inflation pressure regularly. It should
be 420 kPa (60 psi).
After installing the compact spare
on the vehicle, stop as soon as
possible and make sure the spare
tire is correctly inflated. The
compact spare is made to perform
well at speeds up to 105 km/h
(65 mph) for distances up to
5 000 km (3,000 miles), so you can
finish your trip and have the full-size
tire repaired or replaced at your
convenience. Of course, it is best
to replace the spare with a full-size
tire as soon as possible. The spare
tire will last longer and be in good
shape in case it is needed again.
Do not use the compact spare on
other vehicles.
And do not mix the compact spare
tire or wheel with other wheels or
tires. They will not fit. Keep the
spare tire and its wheel together.
For more information about the
vehicle battery, see
.
If the vehicle battery has run down,
you may want to use another
vehicle and some jumper cables to
start your vehicle. Be sure to use
the following steps to do it safely.
Batteries can hurt you. They can
be dangerous because:
They contain acid that can
burn you.
They contain gas that can
explode or ignite.
They contain enough
electricity to burn you.
If you do not follow these steps
exactly, some or all of these
things can hurt you.