In 1992 i was going to Grafton from Sydney to compete in the Australian Hillclimb Championships. The Tow car was a ZG Ford Fairlane, the trailer was built on a caravan chassis & it had a 1200 coupe on it. So it was heavy towcar, light trailer,you'd think it wouldn't be a problem. Got on to the expressway at Hornsby & the car & trailer start taking up all 3 lanes swaying,in peak hour traffic. Got it slowed down & tried again, same thing. Only did it over 80 k's (50mph). going to be a slow trip to Grafton, thinks I. Called the guy who loaded the cars, It turns out he had put 3 20 litre jerry cans of avgas in the 1200 coupe's boot to even out the load, then pumped up the air shocks in the fairlane. So the Avgas went into the boot of the Fairlane, which wasn't even half full, & the air shocks had some air let out. After that it towed so well i didn't even notice that one of the wheels had come off it til i got to Grafton. It was there at Nambucca Heads where i did a walk around, but not at Grafton. Thats why my friend & i went half shares in a 2 tonne flat bed Isuzu truck.