Volkswagen Touran Service Manual: Winter tires
| On "M-and-S-tires", the tread pattern, tread compound or
type are designed such that the handling characteristics in snow
are improved compared to a normal tire. This is especially true
when initiating or maintaining vehicle motion. |
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| The "Snowflake" symbol denotes winter tires that meet
industrial standards, which are based on the American snow tire
definition. These tires provide exceptionally good safety and
control performance in cold weather on snow and icy roads. |
| M+S Designation for 4x4/SUV Tires |
| Some vehicles come equipped with tires bearing the "M+S"
symbol on the outer side. This is due to the fact that these
vehicles were first introduced in North America, where "M+S"
all-season tires are common. The "M+S" designation is officially
defined by an EU-Regulation thusly: "A tire, whose profile and
structure is designed to be more efficient in snow than a normal
tire". Performance data for "M+S" denoted tires are neither
defined, nor measured. The "Snowflake Symbol" (snowflake on the
mountain symbol) is used in North America to specify the snow
performance of winter tires. Only tires that meet or exceed
these requirements may bear the "Snowflake Symbol" (snowflake on
the mountain symbol). |
| From May 1, 2006, the road traffic regulations were changed
to include the following: "Vehicle equipment must be adapted to
the weather conditions. This includes suitable tires and freeze
protection in the windshield washer system." |
| Inform the customer that since May 1st, 2006, he or she is
obligated to adapt vehicle equipment, especially tires, to
winter weather conditions. |
| For the winter operation, it is recommended to mount winter
tires in the sizes shown in the parts certificate table. |
| All tire sizes listed in the vehicle papers can also be
driven as winter tires! |
| The handling characteristics may be affected due to the use
of winter tires the resulting changes in wheel and tire
dimensions. For this reason, driving speed must be adapted to
the changed handling characteristics and road conditions. |
| To attain best handling characteristics winter tires must be
mounted on all wheels. |
| If while mounting the winter tires, the vehicle is equipped
with rims that are not factory-fitted, the following must be
observed: |
| Wheels and wheel bolts are coordinated to each other! |
| When retrofitting to different wheels, the corresponding
wheel nuts with the correct length and cup shape must be used.
Refer to
→ Anchor. The secure seating of the wheels and the
function of the brake system depend on it! |
| Winter tires with tread depth of less than 4 to 5 mm are
only for limited use during winter operation. |
| In some countries, at least 4 mm tread depth are required
for winter tires. |
| It is recommended to not use winter tires longer than six
years. The aging process reduces the particular "winter
characteristics" of these tires independently from the mileage. |
| There are two shank designs: rounded and conical. |
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| The rounded shank has a curved surface
-arrow A-. This design was used for original rims. |
| The conical shank has a flat surface
-arrow B-. This design is used partially on rims from the
accessories program. |
| I - |
Wheel bolt with rounded shank |
| II - |
Wheel bolt with conical shank |
| Vehicles with Tire Pressure Monitoring System |
| On vehicles with tire pressure monitoring system, the tire
pressure must be resaved or adapted after each change from
summer to winter tires or vice versa. Refer to the Owner's
Manual. |
| Permission Stipulations in Germany |
| Only when using winter tires is it permitted that the
highest speed attainable by the vehicle lies above the highest
speed of winter tires specified by the speed rating. |
| In this case, a warning sign must be applied with the
following content: |
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| Attention,
Winter Tires! |
| Maximum
permissible speed ...km/h |
 Note
| This warning sign must be in the driver's field of view! |
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Storage Room
Tire storage must be:
Dark,
Dry,
Cool and
...
Table. Refer to
→ Anchor.
The tire industry delivers winter tires with V-rating also.
These tires can be applied up to the maximum p ...
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Tires, Storing
Winter Tires with Speed Symbol V