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Tire age, Changing wheels and tires – BMW 550i xDrive Gran Turismo 2010 User Manual

Page 231

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Tire age

Recommendation

regardless of wear, replace tires at least every
6 years.

Manufacture date

On the sidewall:
DOT … 3508: the tire was manufactured in the
35th week in 2008.

Changing wheels and tires

Mounting

Information on mounting tires
Have mounting and balancing performed

only by a service center or tire specialist.
If this work is not carried out properly, there is
the danger of subsequent damage and related
safety hazards.◀

Wheel and tire combination

Information on the correct wheel-tire combina‐
tion and rim versions for your vehicle can be ob‐
tained from your service center.
Incorrect wheel and tire combinations impair the
function of a variety of systems such as ABS or
DSC.
To maintain good handling and vehicle re‐
sponse, use only tires with a single tread con‐
figuration from a single manufacturer.
Following tire damage, have the original wheel
and tire combination remounted on the vehicle
as soon as possible.

Approved wheels and tires
The manufacturer of your vehicle recom‐

mends that you use only wheels and tires that
have been approved for your particular vehicle
model.
For example, despite having the same official
size ratings, variations can lead to body contact
and with it, the risk of severe accidents.

The manufacturer of your vehicle cannot evalu‐
ate non-approved wheels and tires to determine
if they are suited for use, and therefore cannot
ensure the operating safety of the vehicle if they
are mounted.◀

Recommended tire brands

For each tire size, the manufacturer of your ve‐
hicle recommends certain tire brands. These
can be identified by a star on the tire sidewall.
With proper use, these tires meet the highest
standards for safety and handling.

Retreaded tires

The manufacturer of your vehicle does not rec‐
ommend the use of retreaded tires.

Retreaded tires
Possibly substantial variations in the de‐

sign and age of the tire casing structures can
limit service life and have a negative impact on
road safety.◀

Winter tires

The manufacturer of your vehicle recommends
winter tires for winter roads or at temperatures
below +45 ℉/+7 ℃.
Although so-called all-season M+S tires do pro‐
vide better winter traction than summer tires,
they do not provide the same level of perform‐
ance as winter tires.

Maximum speed of winter tires

If the maximum speed of the vehicle is higher
than the permissible speed for the winter tires,
then display a corresponding sign in the field of

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