Skoda 2011 Yeti Owner's Manual page 209

208 Wheels and Tyres
ture and when adopting an appropriately cautious style of driving. It should be
replaced as quickly as possible by a normal wheel.
WARNING

Only use those tyres or wheel rims which have been approved for your model
of Škoda Auto vehicle. Failure to observe this instruction will adversely affect
the road safety of your vehicle - risk of accident! Approval and licencing of your
vehicle on public roads may also become void as a result.

You must on no account drive at a higher speed than is permissible for your
tyres - risk of an accident resulting from tyre damage and loss of control over
your vehicle.

Tyres which are 6 years old or more should only be fitted in exceptional cases
and when adopting an appropriately cautious style of driving.

Never fit tyres which have already been used without having adequate
knowledge of their previous history. Tyres age even if they have not been used
at all or only very little. A spare tyre must only be used in exceptional cases and
only then when adopting an appropriately cautious style of driving.

Do not, where possible, replace individual tyres but at least replace them on
both wheels of a given axle at the same time. Always fit the tyres with the
deeper tread depth to the front wheels.
For the sake of the environment
Old tyres must be disposed of in conformity with the appropriate regulations.
Note
It is not normally possible to fit wheels from other models of cars for technical
reasons. This may also apply in certain circumstances to the wheels of the same
type of vehicle.
Wheel bolts
Wheels and wheel bolts are matched to each other in terms of design. Each time
you fit other wheels - e.g. light alloy wheels or wheels with winter tyres - you must
therefore also use the matching wheel bolts of the correct length and shape of
spherical cap. This is essential to ensure that the wheels are tightly fitted and that
the brake system operates properly.
If you retrofit wheel trims (or have this done), please also ensure that an adequate
flow of air remains assured for cooling the brake system.
The authorised Škoda Service Partners are instructed in the technical possibilities
which exist regarding converting or retrofitting tyres, wheels and wheel trims.
WARNING

In case of incorrect treatment of the wheel bolts, the wheel can loosen when
the car is moving - risk of accident!

The wheel bolts must be clean and must turn easily. However, they must
never be treated with grease or oil.

If the wheel bolts are tightened to a too low tightening torque, the rim can
lossen when the car is moving - risk of accident! A tightening torque which is too
high can damage the bolts and threads and this can result in permanent defor-
mation of the contact surfaces on the rims.
Caution
The prescribed tightening torque of the wheel bolts for steel and light alloy wheels
is 120 Nm.
Winter tyres
The handling of your vehicle will be significantly improved when driving on wintry
roads if you fit winter tyres. Summer tyres do not offer the same grip on ice, snow
and at temperatures below 7 °C because of their construction (width, rubber blend,
tread pattern). This particularly applies to vehicles which are equipped with low-
profile tyres or high-speed tyres (code index H or V on wall of tyre).
Winter tyres must be mounted on all four wheels to obtain the best handling char-
acteristics.
You must only fit those types of winter tyre which are approved for your vehicle. The
permissible sizes of winter tyres are stated in your vehicle documents. Approvals
may differ because of national legislation.
Please remember that the tyres should be inflated to 20 kPa (0.2 bar) more than is
the case for summer tyres  page 205.
Winter tyres no longer offer the same winter performance once the tyre tread has
worn down to a depth of about 4 mm.
Ageing also causes winter tyres to lose most of their winter performance properties
- even in cases where the remaining tread depth is still clearly more than 4 mm.
Speed restrictions apply to winter tyres as well as to summer tyres  page 207,

.