Forum Discussion
APT
Feb 20, 2014Explorer
The "80%" rule, guideline, whatever people call it often covered RVing vs. other types of trailers that are far easier to tow. It also generally covered the payload limitation of half ton vehicles and smaller for family RVing. As Ron suggested, there is no such thing as an 80% anything. Learn what each limit is for any given TV with respect to RVing and you can operate up to and some people believe over certain ratings.
Every modern naturally aspirated engine will need 4000rpm+ to maintain 60mph up hills towing high walled RVs. It take a lot of power to maintain 65mph on flat ground and those engines with little reserve torque at 2500rpm will need to downshift a gear or two. But that will be true of 4000 pounds loaded or 8000 pounds.
The problem most people have and the most mentioned improvement when people upgrade to TVs with more capability is the towing stability. The TV handles wind better. Natural wind, wind off opposing semi trucks, wind from slant nose minivans can be a bear when they pass you.
Every modern naturally aspirated engine will need 4000rpm+ to maintain 60mph up hills towing high walled RVs. It take a lot of power to maintain 65mph on flat ground and those engines with little reserve torque at 2500rpm will need to downshift a gear or two. But that will be true of 4000 pounds loaded or 8000 pounds.
The problem most people have and the most mentioned improvement when people upgrade to TVs with more capability is the towing stability. The TV handles wind better. Natural wind, wind off opposing semi trucks, wind from slant nose minivans can be a bear when they pass you.
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