Volvo S 90, Owner'S Manual

Page: 453 / 548

WHEELS AND TIRES
451
Tire direction of rotation
Incorrectly mounted tires impair the car's braking
properties and ability to force aside rain, snow
and slush.
The arrows shows the direction of rotation of the tire
•
The tires with the most tread should always
be on the rear axle (to help reduce the risk of
skidding).
•
When switching between summer and winter
tires, mark the tires to indicate where they
were mounted on the car, e.g., LF = left front,
RR = right rear
•
Tires with tread designed to roll in only one
direction are marked with an arrow on the
sidewall.
•
Contact a trained and qualified Volvo service
technician if you are unsure about the tread
depth.
Related information
•
Tires (p. 446)
Tread wear indicator
The tires have wear indicator strips running
across or parallel to the tread.
The letters TWI are printed on the side of the tire.
When approximately 1/16" (1.6 mm) is left on
the tread, these strips become visible and indi-
cate that the tire should be replaced. Tires with
less than 1/16" (1.6 mm) tread offer very poor
traction.
When replacing worn tires, it is recommended
that the tire be identical in type (radial) and size
as the one being replaced. Using a tire of the
same make (manufacturer) will help prevent
alteration of the driving characteristics of the
vehicle.
Related information
•
Tire direction of rotation (p. 451)
•
Checking tire inflation pressure (p. 454)