Tire Inflation - Volvo XC90 Owner's Manual

Inflation placard
Tire inflation placard
Check tire inflation pressure regularly.
A table listing the recommended inflation
pressure for your vehicle can be found on
page 183. A tire inflation pressure placard is
also located on the driver's side B-pillar (the
structural member at the side of the vehicle,
at the rear of the driver's door opening). This
placard indicates the designation of the fac-
tory-mounted tires on your vehicle, as well as
load limits and inflation pressure.
NOTE
The placards shown indicate inflation pres-
sure for the tires installed on the vehicle at
the factory only.
•
Use a tire gauge to check the tire inflation
pressure, including the spare, at least
once a month and before long trips. You
are strongly urged to buy a reliable tire
pressure gauge, as automatic service sta-
tion gauges may be inaccurate.
•
Use the recommended cold inflation
pressure for optimum tire performance
and wear.
•
Under-inflation or over-inflation may
cause uneven treadwear patterns.
WARNING
•
Under-inflation is the most common
cause of tire failure and may result in
severe tire cracking, tread separation,
or "blow-out," with unexpected loss of
vehicle control and increased risk of
injury.
•
Under-inflated tires reduce the load
carrying capacity of your vehicle.
When weather temperature changes occur,
tire inflation pressures also change. A 10-
07 Wheels and tires

Tire inflation

degree temperature drop causes a corres-
ponding drop of 1 psi (7 kPa) in inflation pres-
sure. Check your tire pressures frequently
and adjust them to the proper pressure,
which can be found on the vehicle's tire infor-
mation placard or certification label.
Checking tire pressure
A certain amount of air seepage from the tires
occurs naturally and tire pressure fluctuates
with seasonal changes in temperature.
Always check tire pressure regularly.
Cold tires
Inflation pressure should be checked when
the tires are cold.
The tires are considered to be cold when
they have the same temperature as the
surrounding (ambient) air.
This temperature is normally reached after the
vehicle has been parked for at least 3 hours.
After driving a distance of approximately
1 mile (1.6 km), the tires are considered to be
hot. If you have to drive farther than this dis-
tance to pump your tire(s), check and record
the tire pressure first and add the appropriate
air pressure when you get to the pump.
If checking tire pressure when the tire is hot,
never "bleed" or reduce air pressure. The
tires are hot from driving and it is normal for
pressures to increase above recommended
07
181