As far as I know Jim the correct answer to your question would be no. Remember that approxamently 20% of Fifthwheel is king pin hitch weight. So in theory if I got my math correct you can subtract 3200 lbs off of your axles. If we do upgrade our next unit will have the 8k axles but way around 19k instead of 16k.
Happy roads to you.
Tom Marty
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