public void setWheelsDampingCompression(float wheelsDampingCompression) {
        this.wheelsDampingCompression = wheelsDampingCompression;
        applyInfo();
    }
the damping coefficient for when the suspension is compressed.
Set to k * 2.0 * FastMath.sqrt(m_suspensionStiffness) so k is proportional to critical damping.<br>
k = 0.0 undamped/bouncy, k = 1.0 critical damping<br>
0.1 to 0.3 are good values

@param wheelsDampingCompression the desired damping coefficient
(default=4.4)
jme3-jbullet/src/main/java/com/jme3/bullet/objects/VehicleWheel.java