Tires - Tread Wear Indicator; Tires - Tire Economy - Volvo S80 Owner's Manual

09 Wheels and tires
09
Tires – 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 indicate 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 prevent
alteration of the driving characteristics of the
vehicle.
Related information
•
Tire specifications (p. 284)
•
Changing a wheel – direction of rotation
(p. 277)
276
•
Tires – storage and age (p. 275)
Tires – tire economy
A smooth driving style and correct inflation
pressure can help prolong the tires' service
life.
•
Maintain correct tire pressure. The tire
inflation table, see the tire inflation decal
on the driver's door opening.
•
Avoid fast starts, hard braking and tire
screeching.
•
Tire wear increases with speed.
•
Correct front wheel alignment is very
important.
•
Unbalanced wheels impair tire economy
and driving comfort.
•
Tires must maintain the same direction of
rotation throughout their lifetime.
•
When replacing tires, the tires with the
most tread should be mounted on the
rear wheels to reduce the chance of over-
steer during hard braking.
•
Hitting curbs or potholes can damage the
tires and/or wheels permanently.