Volvo S40 Owner's Manual page 176

Summer and winter wheels
The arrow shows the tyre's direction of rotation.
When summer and winter wheels are changed,
see page 182, 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 always rotate in the same direc-
tion 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
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.
07 Wheels and tyres
General
07
175