mhiscox
Exp. Leader Emeritus
Technically, you're correct, and are certainly right that a heavy overloaded vehicle will stress the engine, suspension and driveline more.What am I missing?David
Practically, though, I'm not so sure that it's a crisis--and I'm speaking based on my EarthRoamer Jeep experience. It is very likely that the carrier vehicle will be significantly modified and, if so, the heavier suspension and bigger tires will go a long way toward making things safe (each of my tires is good for roughly 3000 pounds, as an example). And the additional load on the engine and transmission doesn't seem to be killing things quickly, as the engine and trans temperatures stay normal, even on a good-sized grade. And the brakes still stop the truck appropriately.
Do I wish the XV-JP weighed a lot less? Sure, but I think turning a Jeep into a motorhome is one of those "You can't make an omelette without breaking eggs" things. Any significant hard-sided accommodations will likely push a loaded JK past the stock GVWR, and there's not a lot to do about it. My ER Jeep seems plenty safe and stable, with the extra weight being noticeable much more in diminished acceleration and speed.
It may be that the biggest issue will be pushing the cabin through the air at highway speeds. The added drag of the ER Jeep cabin has a pretty significant effect on performance and fuel economy, and this option is substantially bigger. The good thing is that many of these will go on JKs with the new 3.6 liter, 285 horsepower engine, rather than the ER's 202 hp 3.8L.
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