be independently actuated and providing the load is adequately secured against lateral movement the relatively shallow angle at which the trailer will tilt is acceptable since the side loading on the suspension and wheel bearings not shown is taken up by the second upright supporting member 42 and sector plate 44 alternatively both wheels could be raised and lowered simultaneously by two persons working together as described or by a single individual using a dual winch and cables not shown attached to each sector plate 44 once both wheels 52 are raised the load bed 20 rests at ground level 30 and the locking device is reinserted through the second aperture 62 in the sector plate 44 and the first aperture 60 in the second upright supporting member 42 thus securing the trailer against theft the motorcycle may be merely driven or pushed on and off the load bed 20 with ease to lower the wheel to the towing position the above described operation is simply reversed either or both the first upright member 40 and the lower end 36 of trailing arm 32 may be provided with a spaced plurality of mounting means 64 for shock absorber 38 thus by adjustment of the shock absorber mounting position the ground clearance of the load bed 20 may easily be adjusted to facilitate towing the trailer over varying types of terrain fig3 is a partial end elevation view of the suspension arrangement of fig2 a and 2b which more clearly illustrates the spatial relationships of the first upright supporting member 42 and sector plate 44.