This topic has been covered on the forums several times before.
https://philip.greenspun.com/materialism/motorhomes/From that article:
" And what about the wandering? The guy behind www.dealdata.com says:
The wheelbase-to-length ratio is the ratio of the length of the wheelbase (measured from the center of the front axle to the center of the rear axle) to the length of the motor home. We consider 54 percent as a minimum wheelbase-to-length ratio for safe highway travel. The categories for wheelbase-to-length ratio are as follows:
Excellent - 58% and above. Any wheelbase in this category should maintain a straight and steady course under most adverse driving conditions.
Good - 54%-57%.
Fatiguing - 51%-53% is considered fatiguing to drive because it will most probably not maintain a straight and steady course under normal highway driving conditions with side winds or heavy truck traffic.
Dangerous - 50% or below is considered dangerous at any speed on any road."
rr2254545 wrote:
Where did this 55% rule come from
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.