public void setMaxSuspensionTravelCm(float maxSuspensionTravelCm) {
        tuning.maxSuspensionTravelCm = maxSuspensionTravelCm;
    }
Use before adding wheels, this is the default used when adding wheels.
After adding the wheel, use direct wheel access.<br>
The maximum distance the suspension can be compressed (centimetres)
@param maxSuspensionTravelCm the maxSuspensionTravelCm to set
jme3-jbullet/src/main/java/com/jme3/bullet/objects/PhysicsVehicle.java