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It takes a churnin burnin hunk of truck to pull a fifth wheel portable mansion. But then, theres the lightweight rig thats happy with an urban warrior pickup. It depends on your wants. In any case, an 8-foot bed is what you need.
7.5 Tons And Up
The largest fifth wheels weigh 14,000 to 16,000 pounds and you wont be towing them -- or stopping them -- empty. They typically are more than 32 feet long and have several slide-outs (sections that slide out to make certain sections wider when parked). Some have granite countertops and tile floors in the kitchen. All that rock adds weight. Youre probably looking at three axles, sometimes four, and six wheels at least. Get the biggest truck you can find with the largest diesel engine. Do your homework on the camper discussion groups. People generally learn from their mistakes when they get stuck on the road with a blown engine or transmission. The more weight youre pulling, the more weight, power, suspension stiffness and brakes you need. In this class, you need at least a 2-ton truck with a dually rear-end. Many people with this large of a tow go for a mini-tractor or even a full-size 18-wheel tractor. If youre thinking 1-ton, that will work if youre a snowbird who only pulls it twice a season. Dont use a 1-ton full-time. Experience shows that it will wear out the truck, especially the transmission.
6 To 7 Tons
Although it is still a good idea to go with a diesel in this weight class, a 1-ton dually is ideal and a 3/4-ton will get the job done in a pinch. If your expected terrain is flat and your travel infrequent, the smaller truck will be fine. If youre pulling the rig through the Rockies and youre full-timing with all your belongings, go for the big package. It is important to keep crosswinds in mind, too. More weight means more stability. A wider stance like a dually helps with high winds and cornering.
4 To 6 Tons
Something 8,000 to 12,000 pounds empty will weigh about a ton more loaded. A 3/4-ton truck with two wheels in the back and a gas engine can do the job on the lighter end of the scale. On the upper end, you might want to opt for a diesel engine to get the torque you need for those long hill climbs. If you happen to have a 1-ton dually to pull this weight class of fifth wheel, you wont even feel that it is back there.
1 To 4 Tons
At the high end of this category, you can get away with a gas engine 1/2-ton truck. At the low end, a compact truck with a six-cylinder engine will do the job. There are one or two fiberglass mini-fifth wheels on the market that fit this weight class. In todays economy, this is the low-cost way to pull something stable and manageable.
