Volvo V70R Owner's Manual page 151

Wheels and tyres
General
The arrow shows the tyre's direction of
rotation.
Summer and winter wheels
When summer and winter wheels are
changed they should be marked with which
side of the car they were mounted on, for
example L for left and R for right. Tyres with a
tread pattern which are designed to only turn
in one direction have the direction of rotation
marked with an arrow on them. The tyre
should always rotate in the same direction
throughout its lifespan. Tyres should only be
switched between front and rear positions,
never between left and right-hand sides, or
vice versa. If the tyre is mounted incorrectly,
the car's braking characteristics and capacity
to force rain, snow and slush out of the way
150
are adversely affected. Tyres with the great-
est tread depth should always be fitted to the
rear of the car (to decrease the risk of skid-
ding.)
Wheels should be stored lying down or hang-
ing up, and not standing up.
Contact an authorised Volvo workshop if you
are uncertain about tread depth.