Run-Flat Tires - Cadillac 2007 XLR Owner's Manual

Vehicle Capacity Weight: The number of
designated seating positions multiplied by 150 lbs
(68 kg) plus the rated cargo load. See Loading
Your Vehicle on page 354.
Vehicle Maximum Load on the Tire: Load on an
individual tire due to curb weight, accessory
weight, occupant weight, and cargo weight.
Vehicle Placard: A label permanently attached to
a vehicle showing the vehicle's capacity weight
and the original equipment tire size and
recommended inflation pressure. See "Tire and
Loading Information Label" under Loading
Your Vehicle on page 354.

Run-Flat Tires

Your vehicle, when new, had run-flat tires. There
is no spare tire, no tire changing equipment,
and no place to store a tire in the vehicle. Run-flat
tires perform so well without any air that a Tire
Pressure Monitor (TPM) is used to alert you
if a tire has lost pressure.
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If a tire goes flat, you will not need to stop on the
side of the road to change the tire. You can
just keep on driving. The shorter the distance you
drive and the slower the speed, the greater the
chance that the tire will not have to be replaced. If
you drive on a deflated run-flat tire for 50 miles
(80 km) or less and at speeds of 55 mph (90 km/h)
or less, there is a good chance that the tire can
be repaired. The tire can operate effectively
with no air pressure for up to 100 miles (160 km)
at speeds up to 55 mph (90 km/h), but the tire
would then have to be replaced. When a tire
is filled with air, it provides a cushion between the
road and the wheel. Because you will not have
this cushion when driving on a deflated tire, try to
avoid potholes that could damage your wheel
and require replacement of it.