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How to Determine If Fifth Wheel Trailer has Clearance to Not Hit Cab When Turning


what is the safe minimum distance between the back of the truck cab to the center of the hitch jaws when towing a big fifth wheel camper using a 1-ton truck.


Helpful Expert Reply:

That depends largely on the measurements of the trailer nose and whether or not it has an extended pin box. Here is a formula though that you can use to determine if you have clearance.

The formula you are referring to is this:

(A + B) - C = Clearance
A = Distance from the fifth wheel jaw center to the truck cab
B = Offset used (slider clearance or Sidewinder offset)
C = Width of the nose of the trailer divided by 2.

You really want a minimum of 4 inches of clearance to be on the safe side.

Generally speaking if you have a long bed truck a stationary fifth wheel hitch will work fine in terms of cab clearance, but if you have a short bed you most likely will need a slider hitch or Sidewinder pin box installed.

I attached a couple help articles for you to check out as well.

helpful expert reply by:
Jameson C

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