We are considering purchase of a 3500 Dodge Ram dually 4x4 diesel.

Problem: vertical clearance between top of bed rail and bottom of overhang on the trailer, according to some, is not possible if a level trailer rig is to be achieved for towing. The minimum clearance should be at least 6".

We don't want to have to make modifications to the TW or trailer, other than adjustments. No flipping axles or removing springs, etc.

Should we look at a 4x2 to achieve this?
We would prefer a 4x4 since we will be in the mountains a lot. However we don't want to get something that is unworkable from the get go without major design alterations. Thanks, DR

 

have a '99 2500 4x4, w/ oversize tires, tow 5th wheel, with no clearance problems. If it's not level, most pin boxes are adjustable quite easily. HTH

 

A lot would depend on the fiver. I have a 99 4x2, and I had to flip the axles on my fiver (31' Jayco) to get it to ride level, and have enough bedrail clearance.

 

I have a '99 Wilderness and had to "flip" the axles to get the clearance. I tried to adjust the pin box, but couldn't get enough clearance that way and also didn't want to lower the rear of my truck. The "flipping of the axles" was really no big deal, it cost me about $100 and a couple hours of time. Did not seem to affect the handling of my 5th wheel at all.

 

I would seriously consider a 2WD if I were you. Some 4x4 rigs are crushing their bed rails for lack of clearance, and raising a 5er when they are already too tall is not advisable.

Unless you need 4x4 for some other reason, you sure don't need it for towing in the mountains. Off-road with a 5er? No. Winter towing in the mountains? You don't go anywhere until the roads are essentially clear of snow. With or without 4x4 the 5er is not safe on snowy mountain roads, and for traction on packed snow (ice) 2WD and chains is better than 4x4 without. Of course 4x4 with chains is even better but if you need that it's better to sit tight until conditions improve.