New Wheels And Tyres; Retreaded Tyres - BMW 730i Owner's Handbook Manual

Tyre damage
Unusual vibration while the car is being driven
could indicate a tyre fault or some other defect
on your car. This may have been caused e.g. by
driving over a kerb or similar. The same applies
to any other abnormal road behaviour, such as
pulling severely to the right or left.
In such cases, reduce speed immediately
and have the wheels and tyres checked
without delay. Proceed with caution to the near-
est BMW Service or specialist tyre dealer that
operates to BMW specifications and has suita-
bly trained personnel. Have the car towed there
if necessary.
Tyre damage represents a risk of serious injury
to the car's occupants and to all other road
users.<
Age of tyres
For a variety of reasons, including the tendency
of tyres to become brittle along with increasing
age, BMW recommends that new tyres be fitted
after not more than 6 years, irrespective of the
actual level of wear. This also applies to the tyre
on the spare wheel.
A tyre's date of manufacture is included in the
inscription on the tyre:
DOT ... 3506 means that the tyre was manufac-
tured in week 35 of 2006.
Run-flat tyres*
The symbol identifying run-flat tyres is a circle
with the letters RSC on the sidewall.
Run-flat tyres comprise a semi self-supporting
tyre and a special rim. The reinforced sections
ensure that the tyre can continue to be used
Online Edition for Part no. 01 41 0 013 197 - © 02/07 BMW AG
subject to certain restrictions, even if depressu-
rised.
On further driving with damaged tyres, see Indi-
cation of a flat tyre on page 88.

New wheels and tyres

Have new wheels and tyres fitted only by
BMW Service or by a specialist tyre dealer
that operates to BMW specifications and has
suitably trained personnel. If such work is per-
formed inexpertly, it could result in consequen-
tial damage and thus constitute a safety

Retreaded tyres

BMW advises against the use of
retreaded tyres, as these could adversely
affect the car's safety. Their carcasses may dif-
fer in internal construction or have aged suffi-
ciently to limit their durability.<
The right wheels and tyres
BMW recommends fitting only wheels
and tyres that it has approved for your
type of vehicle, otherwise the tyres may e.g.
make contact with the vehicle body due to
impermissible tolerances, even though they are
of an approved size; this could result in a serious
accident. BMW is unable to assess the suitabil-
ity of wheels and tyres it has not approved and
cannot therefore guarantee their
Details of the correct wheel and tyre combina-
tions can be obtained from BMW Service.
The correct wheel and tyre combination also
has an influence on various systems, which
could otherwise malfunction, for instance ABS
and DSC.
To maintain the car's good road behaviour,
always fit tyres of the same make and tread pat-
tern to all wheels. After a tyre has been dam-
aged, fit the original wheel and tyre combination
again as soon as possible.
risk.<
safety.<
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