Audi R8 2007 Manuel du propriétaire Page 173

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Wheels and tyres 171
Controls Safety Driving tips General maintenance Self-help Technical data
The performance of winter tyres is also severely impaired by ageing,
even if the tread is still much deeper than 4 mm.
Winter tyres are subject to the following maximum speed limits
according to speed rating code letter:
In Germany vehicles capable of exceeding these speeds must have
an appropriate sticker attached so it is visible to the driver. Suitable
stickers are available from Audi R8 dealers and specialist retailers.
Please note regulations to this effect in your country.
Using winter tyres with V-rating
Please note that the generally applicable 240 km/h speed rating for
winter tyres with the letter "V" is subject to technical restrictions;
the maximum permissible speed for your vehicle may be signifi-
cantly lower. The maximum speed limit for tyres with a V-rating
depends directly on the maximum axle weights for your car and on
the listed weight rating of the tyres being used.
It is best to contact an Audi R8 dealer to check the maximum speed
which is permissible for the V-rated tyres fitted on your car on the
basis of this information.
WARNING
Exceeding the maximum speed permitted for the winter tyres
fitted on your car can cause tyre failure, resulting in a loss of
control of the vehicle – risk of accident.
For the sake of the environment
Summer tyres should be fitted again as soon as possible; they give
better handling on roads which are free of snow and ice. Summer
tyres produce less rolling noise, do not wear down as quickly and,
most importantly, reduce fuel consumption.
Snow chains
Snow chains will improve the vehicle's handling on snow-
covered roads.
Snow chains can be used on the rear wheels only.
Keep your speed below 50 km/h.
Snow chains will improve braking ability as well as traction in winter
conditions.
For technical reasons snow chains may only be used on tyres with
certain wheel rim/tyre combinations.
Only use snow chains with fine-pitch links. The links must not
protrude more than 13,5 mm from the tyres (including tensioner).
Speed rating code letter
page 168
Maximum speed limit
Q 160 km/h
S 180 km/h
T 190 km/h
H 210 km/h
V 240 km/h
(please note relevant restrictions)
Rim size Rim offset Tyre size
8.5Jx18 42 mm 235/40
8.5Jx19 42 mm 235/35
10.5Jx18 55 mm 285/35
10.5Jx19 55 mm 295/30
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