Operation CHARM: Car repair manuals for everyone.

General Information



General information

Special models
Special models are only partially considered in the tables of exhibit 2 of the parts certificate. The retrofitting possibility for these vehicles depends on the motorization of the respective base model.

Speed ratings for tires
The speed rating (e.g.: "T") behind the tire size specification (e.g.: 185/65 R 14 86T) indicates the maximum permissible speed (v max) for the tire.

When selecting the tires for a vehicle, ensure that their maximal permissible speed lies above the maximum speed attainable by the vehicle ("design-related").

Vehicles with national type approval
For all vehicles with national type approval, the maximum speed is calculated using the following formula:

Formula for vehicles with v max up to 150 km/h
- v max = 1.03 x v + 3.5 km/h

Example: Indicated maximum speed v = 145 km/h
- v max = 1.03 x 145 km/h + 3.5 km/h = 152.85 km/h

In this example, a "Q" -tire or a tire with a higher-order speed rating must be used.

Formula for vehicles with v max from 151 km/h
- v max = 1.01 x v +6.5 km/h

Example: Indicated maximum speed v = 163 km/h
- v max = 1.01 x 163 km/h +6.5 km/h = 171.13 km/h

In this example, a "S" -tire or a tire with a higher-order speed rating must be used.

Vehicles with EU type approval

For all vehicles with EU-registration, the maximum speed is calculated using the following formula:
- v max = 1.05 x.

Example: Indicated maximum speed v = 172 km/h
- v max = 1.05 x 172 km/h = 180.60 km/h

In this example, a "T" -tire or a tire with a higher-order speed rating must be used.

Using tires with a higher-order speed rating is permitted. The same applies for tires with higher order load-carrying capacity characteristic number (load index).

Note:
^ In the place of the letter "v" use the maximum speed indicated in the vehicle registration, under number 6. This conversion is necessary, because due to technical reasons, all vehicles reach different maxim speeds within a legally permissible range.

Tires "80 series"

Tires of the "80" series (e.g. 145/80 R 13 74S) will replace the "82" series (e.g. 145/82 R 13 74S). All tires of the "82" series may be replaced by tires of the "80" series without any entry in the registration documents.

For this, the tires of the "80" series require to have the same section width, tire design (diagonal or radial ply tires), and the same or a higher load-carrying capacity characteristic number.

The "80" and "82" series tires may only be used if they are entered in the vehicle registration documents.

Wheel bolts - tightening torques
See the following table for wheel bolts and their technical information.





Modified wheel bolts for Sharan from model year 2001





From model year 2001, modified wheel bolts have been used. The dimensions and tightening torques for the existing and the modified wheel bolts are the same.

1 - Wheel bolt for vehicles up to and including model year 2000
Black burnished surface - replacement parts number 701 601 139 B.

Is not permissible on vehicles from models 2001.

2 - Wheel bolt for vehicles from model year 2001
Collar - arrow - is not connected firmly with the hex bolt.

Silver-colored surface - replacement parts number 7M3 601 139 B.

Is not permissible on vehicles through models 2000.

CAUTION!
^ The changed wheel bolts are not permitted on vehicles that were produced through model year 2000!
^ Wheels from vehicles that were produced through model year 2000 are not permitted on vehicles from model year 2001!


Disc wheels (rim) - pitch circle diameter

Indications on disc wheels
Several indications can be found on the disc wheels. The indications required for the clear identification of the disc wheel, can be seen in the following example:





Multi-part composite wheels
Composite wheels consist of various parts.

The primary components are rims and wheel discs. These components are fastened to each other with special bolts and a special procedure. This ensures the wheels function, proper seal, safety and true running. These important requirements cannot be guaranteed under shop conditions and using shop tools.

CAUTION!
Composite wheels must not be disassembled or repaired!


Light alloy wheels with replaceable decoration elements
These disc wheels are equipped with replaceable decoration elements. Note the following when installing.





- Clean the thread in the disc wheel before assembling with new bolts.
- Use new bolts only!

1. Decoration element

2. Hex socket bolts

Tightening torque for self-locking bolts: 5 Nm

Additional wheel housing enlargement (FLAPS)





On some vehicles with certain wheel/tire combinations, wheel housing enlargements (FLAPS) must be attached on the fenders or bumper for technical reasons - arrows.

Please check whether FLAPS must be installed.

The necessary wheel/tire combination information can be found in the overview table for the respective vehicle.