Run Flat Tyres - Audi A4 Owner's Manual

document_0900452a81b1b9de.book Seite 274 Donnerstag, 26. Juli 2007 9:16 09
274 Wheels and tyres
For technical reasons snow chains may only be used on tyres with
certain wheel rim/tyre combinations.
Rim size Rim offset
7Jx16 39 mm
7Jx16 46 mm
7Jx17 46 mm
Only use snow chains with fine-pitch links. The links must not
protrude more than 13.5 mm from the tyres (including tensioner).
Remove the chains when roads are free of snow. Otherwise they will
impair handling, damage the tyres and wear out very quickly.
Four-wheel drive: where snow chains are compulsory on certain
roads, this normally also applies to cars with four-wheel drive. Snow
chains may only be fitted to the front wheels (also on vehicles with
four-wheel drive).

Run flat tyres

Applies to vehicles: with run flat tyres
Introduction
Run flat tyres allow you to continue your journey in the
event of a loss of tyre pressure.
Run flat tyres have reinforced sidewalls which support the tyre in
the event of a loss of pressure.
Run flat tyres must only be used on vehicles which were already
factory-fitted with these tyres and which also have a tyre pressure
monitoring system*.
Run flat tyres can be identified by the marking "RSC" (Runflat
System Component) on the sidewall.
If you change the tyres on your vehicle from regular tyres to run flat
tyres or vice-versa, the control unit must be reprogrammed by an
Audi dealer or other qualified workshop.
Tyre size
What are the benefits of run flat tyres?
205/60
Run flat tyres ensure that you remain mobile, even in the event of a
225/55
loss of tyre pressure. In favourable conditions these tyres have an
operating range of at least 30 km, however the vehicle must not be
225/50
driven faster than 80 km/h ⇒
page 275.
The tyre pressures are constantly checked by the tyre pressure
monitoring system. When the run flat system becomes active
(centre display), it is still the driver's responsibility to check the
tyre(s) affected and to decide whether it is possible to continue
driving. Also refer to ⇒ page 275, "Driving with run flat tyres".
When is it no longer possible to continue driving with
the help of the run flat tyres?
If the Electronic Stabilisation Program (ESP) is out of operation
or is triggered continuously.
If the tyre pressure monitoring system is out of operation.
If one of the tyres has been severely damaged in an accident, etc.
If a tyre has been badly damaged there is a risk that parts of the
tread can be thrown off and cause damage to the fuel lines, brake
pipes or fuel filler.
You must stop driving if severe vibrations occur, or if the wheel
starts overheating and gives off smoke.
You must also stop driving if damage to the tyres (e.g. tears in
the sidewalls) becomes apparent.
WARNING
Please ask your Audi dealer or qualified workshop whether run flat
tyres can be used on your vehicle. Unauthorised use of these tyres
can invalidate the vehicle's type approval for use on public roads.
in "Driving with run flat tyres" on