Determine the maximum possible suspension lift / remaining suspension travel
The maximum height of a suspension lift is limited by the remaining suspension travel. For a TÜV registration according to Section 21 or Section 19(2) of the Road Traffic Licensing Act (StVZO), a remaining suspension travel of at least 4cm is required following a suspension lift. Adhering to the remaining suspension travel guarantees a suspension lift without any problems. As a result, brake hoses, drive shafts, axles and the chassis remain within the tolerance range tested by the TÜV (TÜV Fact Sheet 751, Annex II).
How to determine the maximum possible suspension lift:
- Mark the centre of the wheel with the adhesive tape and measure vertically up to the edge of the mud guard.
- With the vehicle at rest, measure the vertical distance between the marked centre of the wheel and the edge of the mud guard (Figure A) above it and note down the value (ATTENTION: always measure the vehicle at rest first, then in a rebounded state, otherwise the measurement result will be falsified).
- Lift the body using a jack or hoist.
- Now the vehicle is rebounded and the wheels have no contact with the ground (Figure B). Now measure the distance again between the centre of the wheel and the lower edge of the mud guard.
Optimising the suspension travel
Before unscrewing the shock absorber, measure how much thread is free towards the top. Alternatively, you can then install washers around this free amount. This increases the remaining suspension travel (more comfort while driving)
The remaining suspension travel can be increased by suspension top cap washers Fit these between the piston rod and the upper suspension-strut mount This increases the remaining suspension travel for more comfort while driving If this suspension travel is not sufficient, we offer an optional piston rod extension, which can be ordered at www.spaccer.com
In the example opposite, the vehicle can have the suspension lifted by up to 6.00 cm / 2.36 in.
|Distance when rebounded (Figure B)
|Distance when compressed (Figure A)
|– 39,0 cm
|Required minimum suspension travel
|– 4,0 cm
|Max. Possible elevation
|= 6,0 cm
|SPACCER (1.20cm / 0.47in)
|SPACCER (1.20cm / 0.47in) with optional rubber profile (0.30cm / 0.11in)