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run-flat tire for 25 miles (40 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.
Some road hazards can damage a tire beyond repair.
This damage could occur even before you have
driven on the tire in a deflated condition. When a tire
has been damaged, or if you have driven any distance
on a run-flat tire, check with an authorized run-flat
tire service center to determine whether the tire can be
repaired or should be replaced. To maintain your
vehicle’s run-flat feature, all replacement tires must be
self-supporting tires. As soon as possible, contact
the nearest authorized GM or run-flat servicing facility
for inspection and repair or replacement. To locate
the nearest GM or run-flat servicing facility, call
Roadside Assistance. For phone numbers and Roadside
Service details see Roadside Assistance Program on
page 7-8.
{CAUTION:
Run-flat tires are constructed differently than
other tires and could explode during improper
service. You or others could be injured or
killed if you attempt to repair, replace,
dismount, or mount a run-flat tire. Let only an
authorized run-flat service center repair,
replace, dismount, and mount run-flat tires.
The valve stems on your run-flat tires have sensors that
are part of the Tire Pressure Monitor System (TPMS).
See Tire Pressure Monitor System on page 5-68. These
sensors contain batteries which are designed to last
for 10 years under normal driving conditions. See your
dealer/retailer if you ever need to have a wheel
replaced, or if the sensors ever need replacement.
5-65