I hunted around for contact information for iSi in Oz, but they've been unresponsive. Looking for a hitch mounted bike rack that 1) doesn't wobble and 2) holds up well to moderate off roading. I often mountain bike in Moab while there off roading.
Anyone out there got any recommendations?
I can't remember the original manufacture's name but essentially I have what is now the Thule T-2 916 XTR. Mine was made originally by a bus rack builder and I believe it was somehow sold to Thule. Anyway, it is a bullet proof rack though the paint eventually went after about 10 years of year round use. (I live in snow country and would transport my bike down off the hill to ride.) I have had mine for 12 years and I had it sand blasted and powder coated last year and it's almost like new again.
It is expensive though at around $449.00. However, it is very solid and will last a long time. If folds up easily when your bikes are off and clears the 80 tailgate very well. One vehicle I had it rubbed on the tailgate a bit if I had it latched in the up position (no bikes on).
Bikes go on fast without wheel removal. Also, on my 80 I can lift the rear hatch enough, with the bikes on, to access the cargo area. If you need more access/clearance the rack tilts down and back, to the rear, which causes the handle bars to come away from the vehicle to allow for more room to drop the tail gate or lift the hatch.
Many of the other racks of this type are not as heavy duty. Oh yea, it is heavy (my guess 50-60lbs) and awkward to move around when not on the truck. Easier if you grab it folded up with the receiver away from your legs. Not a problem for me but my girlfriend can't move it around without dragging it...which of course damaged the paint and started the rusting of the original paint. However, there is no sway from bikes. You could stand on the ends of this thing.
There will be some overhang with or without the bikes on and so departure angle becomes limited especially with it down with bike on. You just need to select the route. Better, IMO, than trying to get a bike on a roof rack on a tall 80 or worse forgetting about it and entering a garage/ or lower roofed gas station.
Lastly, it has an optional lock that locks the rack into the receiver with an attached long and really stout cable that runs through the bikes.
I highly recommend the Thule T-2 916XTR!!