Test Prerequisites

Test Prerequisites

Clarification of Production Control numbers (PR No.): => [ Check which suspension is installed in the
vehicle. This information can be found on the vehicle data plate ] Adapters, Allocating to Suspension for Alignment

Suspension version installed in vehicle is indicated by the corresponding PR. No. on the vehicle data plate - arrow -.

Sample Vehicle Data Label





In this example the vehicle has standard suspension 1BA - arrow - installed.

The vehicle data sticker is located at rear of spare wheel well and in Maintenance booklet.

1BA = Standard suspension

1BB = Off road suspension, China

1BE = Sport suspension (20 mm lower than 1BA)

1BD = Sport suspension S4

1BR = Comfort - heavy duty suspension (13 mm higher than 1BA)

1BV = Sport suspension (quattro GmbH)

2MC = Basic suspension (quattro GmbH RS4)

2ME = Sport suspension (quattro GmbH RS4)

• The measurement sensor must be properly adjusted and attached to the vehicle; observe device manufacturer's operating instructions.

• Tread depth difference may be no more than 2 mm on an axle.

• Tires inflated to correct pressure

• Be sure that sliding plates and turn tables are not touching end stop when checking wheel alignment

• Vehicle empty weight *

* Empty weight means: Weight of the vehicle ready for the road (fuel tank and fluid reservoir for window-/headlamp washer system completely filled, spare wheel, vehicle tools and vehicle jack) and without driver.

Spare wheel, vehicle tools and vehicle jack must be located in the position specified by the vehicle manufacturer.

• Vehicle accurately aligned, suspension bounced and rocked several times

• Check suspension, steering and steering linkage for excessive play and damage, repair if necessary.

• Perform wheel run-out compensation: Permissible axial run-out of the wheel rims can exceed the specified toe setting tolerance. If compensation for wheel run-out is not performed, it will not be possible to obtain a correct toe-in adjustment.

Wheel alignment is necessary when:

• Vehicle shows handling problems.

• Involved in an accident.

• Axle components were removed.

• Tire wear patterns are uneven.