Quote:
Originally Posted by Chance
I don't fully understand why they do it, but motorhome manufacturers often use chassis with short wheelbases and then extend the rear excessively. I'm guessing they do it to lower costs, and to improve turning radius, but in the process they are sometimes creating some of the instability issues owners complain about.
Other factors like increased motorhome height and/or higher center of gravity are obvious contributors to instability. We just have to keep in mind that instability doesn't come up in the showroom where most motorhomes are selected, so manufacturers have little incentive to solve the problem if it's going to cause them sales. They could build lower motorhomes with lower CG, but few would buy them.
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Customers want large basement storage areas and a lot of headroom inside the coach. Rows of ceiling high storage cabinets, one or two AC units on the roof contribute or create the problem. I was surprised to see that Thor put a large capacity, relatively tall fresh water storage tank above floor, several feet behind the rear axel.
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