Michelin LIGHT TRUCK TIRE - Manual (Page 7)

CHECK THE COLD INFLATION PRESSURES IN ALL
YOUR TIRES, INCLUDING THE SPARE, AT LEAST
ONCE EACH MONTH
Failure to maintain correct inflation may result in improper vehicle
handling and may cause rapid and irregular tire wear, sudden tire
destruction, loss of vehicle control and serious personal injury. Therefore,
inflation pressures should be checked at least once each month and always
prior to long distance trips. This applies to all tires, including sealant types
and PAX System tires, which are as susceptible to losing air pressure as any
other type of tire if not properly maintained.
Pressures should be checked when tires are cold, in other words, before
they have been driven on. Driving, even for a short distance, causes tires
to heat up and air pressure to increase.
Checking pressure when tires are hot:
If pressures are checked after tires have been driven for more than three
minutes or more than one mile, (2 km) the tires become hot and the
pressures will increase by approximately 4 psi. Therefore when the tire
pressure is adjusted under these conditions, it should be increased to a gauge
reading of 4 psi greater than the recommended cold inflation pressure.
For Example Only:
Gauge reading of hot tire:. . . . . . . . . . . . . . . . . 32 psi (220 kPa)
If recommended cold inflation pressure is: . . . . . 30 psi (205 kPa)
Desired gauge reading of hot tire 30 + 4 psi = . . 34 psi (205 + 30 = 235 kPa)
Therefore: add 2 psi . . . . . . . . . . . . . . . . . . . . . (15 kPa)
Check cold pressure as soon as possible, preferably within 24
hours. “Bleeding” air from hot tires could result in under-
inflation. Use an accurate tire gauge to check pressures. Never
allow children to inflate or deflate tires.
FOR PAX ® SYSTEM TIRES CHECK INFLATION
PRESSURES AS SOON AS POSSIBLE FOLLOWING
A LOW PRESSURE WARNING
The PAX ® System requires a functioning, correctly calibrated
on-board vehicle tire pressure monitoring system (TPMS) to
monitor the air pressure and alert the driver when a low
pressure event occurs. Be certain to ensure that your
vehicle’s Tire Pressure Monitoring System (TPMS) is
functioning and is correctly calibrated. Refer to your vehicle
owner’s manual or your vehicle dealer.
Low pressure warning systems are designed to alert the driver to a low air
pressure situation in at least one tire on the vehicle. While your PAX System tires
are designed to provide continued mobility in the event of an air loss, the
sooner you respond to a warning and take corrective action, the greater the
likelihood that the tire can be returned to service.
Always visually inspect your PAX System tires and use a
pressure gauge to check the air pressure in all 4 tires
following any low pressure warning. (Unless advised to do
otherwise by the manufacturer of your low pressure warning
system.)
7