I have a single carrier and a double. The single is no problem on a rover, i think i bought it at motorcycleramps.com or something like that. The only issue is the anti-sway devices that come with them don't work with the defender rear bumper but it's not big deal. Worse comes to worse you can throw a strap on it to keep it from swinging. Ironically, I just finished loading two dirt bikes on the back of my defender.. I will post pics tomorrow. For reference purposes regarding weight the bikes are a 400cc dual sport and a 250cc dual sport..