Procedure steps

Preprocesses 

Only BMW approved wheel and tire combinations are installed on the vehicle. The right and left tread depth differs by max 2 mm.

safety instructions 

TECHNICAL INFORMATION 

Basically a wheel alignment must always be carried out with ride height measurement without vehicle load  .

For more information see: 32 00 155 KINEMATICS DIAGNOSIS SYSTEM WHEEL ALIGNMENT WITH RIDE HEIGHT MEASUREMENT WITHOUT LOADING THE VEHICLE .

Carry out wheel alignment with vehicle load till design position  , if the technical prerequisites for a wheel alignment with ride height measurement without vehicle load  are not fulfilled or if there is a damaged vehicle.

Prerequisite 

1. Preliminary work before wheel alignment 

   Correctly adjust tire pressure.

   Check chassis components for damage and repair, if necessary.

   On vehicles with rear axle slip angle control: 

   Run the service function "HSR actuator to center position".

   On vehicles with air suspension: 

   Pull the fuse of the air supply system so that the chassis and suspension cannot be adjusted unintentionally.

   Drive the motor vehicle onto the axle alignment test stand so the front wheels and rear wheels are positioned in the center of the rotating/sliding plates.

   Fig 1: Identifying Wheel Alignment Rotary And Sliding Plates

   Courtesy of BMW OF NORTH AMERICA, INC.

   TECHNICAL INFORMATION 

   Follow the equipment manufacturer's specifications! Use only BMW-approved quick-clamping brackets. Due to excessive measuring inaccuracy, other quick-clamping brackets are not permitted.

   Attach quick-clamping bracket 1  to motor vehicle.

   Ensure that only Original BMW quick-clamping brackets are used.

   Fig 2: Identifying Quick-Clamping Bracket

   Courtesy of BMW OF NORTH AMERICA, INC.

   In the Kinematics Diagnosis System, enter the customer and vehicle data.

   Identify the equipment specifications of the vehicle and select the vehicle.

   Enter tire pressure and tread depth.

   Remove locking pins from both rotating and sliding plates.

   Install brake tensioner.

   Fig 3: Securing Pedal Support

   Courtesy of BMW OF NORTH AMERICA, INC.
2. Moving vehicle into normal position 

   In vehicles with air suspension systems: 

   run ride height adjustment with BMW diagnosis system.

   Check vehicle interior and luggage compartment (including spare wheel well) for load status, if applicable, unload motor vehicle.

   Lay prescribed DIN load into vehicle.

   TECHNICAL DATA SPECIFICATION
   
   

   DIN normal position loading
   	Motor vehicle has a full tank.
   	Motor vehicle is completely assembled.
   	Per front seat (seat in center position)
   	68 kg
   	On the center rear seat
   	68 kg
   	Centered in the luggage compartment
   	21 kg

3. Moving vehicle into design position 

   Lay weights in the area of the spring strut until the vehicle ride height is within the tolerance!

   TECHNICAL DATA SPECIFICATION
   
   

   Tolerance for ride height at design level
   	Tolerance for setpoint value
   	max. 2 mm
   	Difference between left and right
   	max. 2 mm

   Measuring vehicle ride height A  : 1  Attach the tape measure to the bottom rim flange 2  and measure the distance to the lower wheel arch edge.

   Fig 4: Measuring Vehicle Ride Height

   Courtesy of BMW OF NORTH AMERICA, INC.

   Key processes 

4. Carry out wheel alignment 

   Perform introductory alignment in accordance with equipment manufacturer's instructions.

   If necessary, adjust front axle and rear axle.

   Perform final alignment in accordance with equipment manufacturer's instructions.

   Save and print out test record.

   Post processes 

5. Removing the wheel alignment equipment 

   Insert locking pins into both rotary and sliding plates.

   Remove quick releases.

   Remove weights from the motor vehicle.