An additional spare tyre carrier can be mounted on the back of the motorbike rack. Since the more compact 11, 13 and 15 foot Bliss Mobil units are not as wide as the 16, 18 and 20 foot Bliss Mobil units, the wheels may extend past the sides of the unit (depending on wheel size).

Equipping the motorbike carrier with two spare wheels does have a negative impact on the available weight capacity that is left for a (motor)bike.