Volvo 2009 XC90 Owner's Manual download pdf (Page 170)

07 Wheels and tyres

General

07

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169

More even wear and maintenance

G020323

The correct tyre pressure results in more even

wear, see page 172. Driving style, tyre pres-

sure, climate and road condition affect how

quickly your tyres age and wear. To avoid dif-

ferences in tread depth and to prevent wear

patterns arising, the front and rear wheels can

be switched with each other. A suitable dis-

tance for the first change is approx. 5000 km

and then at 10 000 km intervals. Contact an

authorised Volvo workshop if you are uncertain

about tread depth.

Wheels should be stored lying down or hanging

up, and not standing up.

Tyres with tread wear indicators

Tread wear indicators are narrow treadless

bands across the width of the tread. On the

side of the tyre are the letters TWI (Tread Wear

Indicator). When the tyre's tread depth is down

to 1.6 mm, the tread depth will be level in height

with the tread wear indicators. Change to new

tyres as soon as possible. Remember that

tyres with little tread depth provide very poor

grip in rain and snow.

Winter tyres

Volvo recommends winter tyres with specific

winter tyre dimensions. Tyre dimensions are

dependent on engine variant. When driving on

winter tyres, they must be fitted to all four

wheels.

NOTE

Ask a Volvo dealer which rim and tyre types

are most suitable.

Studded tyres

Studded winter tyres should be run in gently for

500 – 1000 km so the studs settle properly into

the tyre. This gives the tyre, and especially the

studs, a longer service life.

NOTE

The legal provisions for the use of studded

tyres vary from country to country.

Tread depth

Road conditions with ice, slush and low tem-

peratures place considerably higher demands

on tyres than summer conditions. It is therefore

recommended not to drive on winter tyres that

have a tread depth of less than four millimetres.

Snow chains

Snow chains may only be used on the front

wheels. This also applies to all-wheel-drive

cars.

Never drive faster than 50 km/h with snow

chains. Avoid driving on bare ground as this

wears out both the snow chains and tyres.

Never use quick-fit snow chains as the space

between the brake discs and the wheels is too

small.

IMPORTANT

Use Volvo genuine snow chains or equiva-

lent chains designed for the car model, and

tyre and rim dimensions. Consult an author-

ised Volvo workshop

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