Concerns about the lack of proper body-on-frame construction keep cropping up here. OK, educate me. Has anybody experienced structural failure of a unibody car towing an egg trailer? No?
I believe some of you have an outdated view of vehicle design, as obsolete as an aging exhibit I saw in the Detroit Museum of "How a Car is Made." You can watch as the body shell of an '80s Impala is lowered onto its frame. Today, that's how a truck is made. Trucks are necessary for many heavy duties, but IMHO, not for towing a fiberglass trailer.
Let's look at unibody SUVs, like the VW Toureg. The tow rating, with TDI engine, is 7700 lbs. It could tow my Scamp
16 three times over, if that were any kind of a practical setup. Should the lack of discrete frame rails running from bumper to bumper cause me to fear towing a class of trailer that tops out at half the tow rating?
My Forester has shown limitations in the tongue weight
I can use, but it's never creaked or groaned, let alone broken in half. So I'd say that rear suspensions are the critical limit, not frame strength.