Volvo XC90 Owner's Manual page 173

07 Wheels and tyres
General
Summer and winter wheels
The arrow shows the tyre's direction of rotation
When summer and winter wheels are changed,
see page 178, the wheels 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 rota-
tion marked with an arrow. The tyre must
07
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 are
172
adversely affected. Tyres with the greatest
tread depth should always be fitted to the rear
of the car (to decrease the risk of skidding).
Volvo recommends that you contact an author-
ised Volvo workshop for checking if you are
uncertain about tread depth.