A Suburban will have a hard time with it. A couple of other things to remember are that the motorcycle will at least partially, if not totally, obscure your tail lights and blinkers. Your rear suspension will also be so squatted down that your headlights will aim way high at night, making them less effective and pissing off other drivers. You'll even be able to tell your front end is lighter, especially going over bumps.
Not that I think it matters much, but note the KLR exceeds the 400-pound rated capacity of the carrier.
Note: I think one of these might be okay for, say, a -300-pound motorcycle on a larger pickup/SUV, but definitely not a +400-pound machine like a KLR. I used mine to carry a Honda XR650, less weight than KLR, but still well above 300 pounds, I believe. Short, slow, daytime trips carrying, say, a 250 dirt bike, it would probably be okay.
Last edited by planalp; 09-28-2012 at 08:40 PM.