Volvo V 40, Owner'S Manual

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09 Wheels and tyres
09
322
*
Option/accessory, for more information, see Introduction.
Related information
•
Changing wheels - taking out the spare
wheel* (p. 318)
•
Changing wheels - removing wheels (p.
319)
•
Jack (p. 315)
•
Spare wheel* (p. 317)
•
Warning triangle (p. 323)
•
Wheel bolts (p. 314)
Tyres - air pressure
Tyres can have different air pressures which
are measured in bar.
Check the air pressure in the tyres
The air pressure (p. 457) for the tyres must
be checked every month. Check air pressure
with cold tyres. "Cold tyres" means the tyres
are the same temperature as the ambient
temperature. After several few kilometres of
driving, the tyres warm up and the pressure
increases. Inadequate tyre pressure increases
fuel consumption, shortens tyre lifespan and
impairs the car's roadholding. Driving on
tyres with tyre pressure that is too low could
result in the tyres overheating and being
damaged. Tyre pressure affects travelling
comfort, road noise and steering characteris-
tics.
NOTE
Tyre pressure decreases over time, this is
a natural phenomenon. Tyre pressure also
varies depending on ambient temperature.
Tyre pressure label
G021830
The tyre pressure label on the driver's side
door pillar (between front and rear door)
shows which pressures the tyres should have
at different loads and speed conditions. This
is also specified in the tyre pressure table.
•
Tyre pressures for the car's recom-
mended tyre dimension (p. 316)
•
ECO pressure results in improved fuel
economy (p. 300)
NOTE
Temperature differences change the
tyre pressure.
Fuel economy, ECO pressure
In order to obtain optimum fuel economy at
speeds below 160 km/h an ECO pressure is
recommended (applies to both full and light
load - see the tyre pressure table (p. 457)).