Volvo 2013 XC70 - Manual (Page 300)

08 Wheels and tires
Tire inflation
08
298
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 distance to
pump your tire(s), check and record the tire
pressure first and add the appropriate air pres-
sure 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 pres-
sures to increase above recommended cold
pressures. A hot tire at or below recommended
cold inflation pressure could be significantly
under-inflated.
To check inflation pressure:
1. Remove the cap from the valve on one tire,
then firmly press the tire gauge onto the
valve.
2. Add air to reach the recommended air
pressure.
3. Replace the valve cap.
4. Visually inspect the tires to make sure there
are no nails or other objects embedded
that could puncture the tire and cause an
air leak.
5. Check the sidewalls to make sure there are
no gouges, cuts, bulges or other irregular-
ities.
6. Repeat this procedure for each tire, includ-
ing the spare.
NOTE
• If you overfill the tire, release air by
pushing on the metal stem in the center
of the valve. Then recheck the pressure
with your tire gauge.
• Some spare tires require higher inflation
pressure than the other tires. Consult
the tire inflation pressure table on page
299 or see the inflation pressure plac-
ard.
Tire ratings
Speed ratings
The speed ratings in the table translate as fol-
low:
Speed ratings
M 81 mph (130 km/h)
Q 100 mph (160 km/h)
T 118 mph (190 km/h)
H 130 mph (210 km/h)
V 149 mph (240 km/h)
Speed ratings
W 168 mph (270 km/h)
Y 186 mph (300 km/h)
Load ratings
See page 300 for an explanation of the load
rating on the sidewall of the tire.