The vehicle or TPMS manufacturer may advise checking the TPMS
regularly to confirm it is in working order. In addition, a new pressure
sensor, certain components, or reprogramming may be necessary when a
tire is serviced. Consult your vehicle owner ’s manual, vehicle manufac-
turer, or a Bridgestone Firestone Run-Flat Certified Retailer for questions
regarding TPMS operation and service.
RUN-FLAT OR LOW TIRE PRESSURE OPERATION
WARNING!
Serious personal injury or death may result from a tire failure or
accident due to improper run-flat or low tire pressure operation.
Read and follow the instructions below, and the other maintenance
and safety recommendations elsewhere in this manual.
General Instructions
The Tire Pressure Monitoring System (TPMS) required in your vehicle
may have different methods of alerting you when your tire has lost
inflation pressure. The international standard for the definition of run-flat
operation is pressure at or below 10 psi (70 kPa); however, some vehicle
manufacturers may have established a different pressure limit. Consult
your vehicle owner ’s manual for the details of your TPMS. Once the
TPMS has indicated that a tire has reduced inflation pressure, the run-flat
mode of operation has commenced. During this phase of operation,
please follow these instructions:
•Reduce speed as much as safely and reasonably possible; do not
exceed 50 mph (80 km/h).The greater the speed, the less distance the
tire can travel.
•Avoid abrupt or aggressive acceleration, braking, or cornering ma-
neuvers as much as safely and reasonably possible.Pot holes and
other road hazards should be avoided. Careful driving limits potential
damage to the tire, wheel, and vehicle.
•Proceed to a safe and convenient location for tire service as soon as
possible.Take note of your mileage; your operation distance is limited.
SeeDistance—How Far You Can Drive,” the next section in this
manual.
BRIDGESTONE® - FIRESTONE®
73
safety humps or ledges. As with any other tire air valve, the PAX®
System valve stem-pressure sensor combination must be in good
condition to assure its performance. Always utilize valve caps capable
of containing the tire’s air pressure, should the valve core leak. The
valve cap is the primary seal against air loss.
It is recommended that you have your tires and wheels balanced. Tires
and wheels which are not balanced may cause steering difficulties, a
bumpy ride, and irregular tire wear.
SPECIAL MOUNTING INSTRUCTIONS FOR PAX® SYSTEM
TIRES
PAX System wheels are different from all other wheels. Never attempt to
mount a non-PAX System tire on a PAX System wheel, or a PAX® System
tire on a non-PAX System wheel. Attempting to do so could cause serious
injury or death. All PAX System components (tire, wheel, support ring,
pressure sensor and gel) must be utilized. Never utilize a PAX System tire
and wheel without every other properly functioning component part,
correctly installed by an Authorized PAX System retailer. The PAX
System must be used on all wheel positions.
After a low or zero pressure driving event, the PAX System tire and wheel
may be hot to the touch.Always allow a PAX® System tire to cool
before attempting to handle it. Failure to do so could result in injury.
SPECIAL MOUNTING INSTRUCTIONS FOR SELF-SUPPORTING
ZERO PRESSURE™ (ZP) TIRES
ZP tires can be more difficult to mount than conventional tires. They
should be mounted and demounted only by a properly trained tire
professional. ZP tires can generate a tremendous amount of heat when
run at low or zero pressure. ALWAYS ALLOW A ZP TIRE TO COOL
BEFORE ATTEMPTING TO HANDLE IT. FAILURE TO DO SO COULD
RESULT IN INJURY.
MICHELIN® ZP tires are tubeless tires designed to operate in emergency
conditions at low or zero air pressure.
MICHELIN® SELF SUPPORTING Zero Pressure (ZP) TIRES AND
SPECIAL SH-M (SYMMETRIC HUMP-MODIFIED) WHEELS
Some MICHELIN® ZP tires can only perform with zero pressure
capability when mounted on special SH-M wheels. These tires bear the
SH-M designation immediately following the ZP designation on the
MICHELIN
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