I agree with the above posts. Going to a truck scale has been very helpful. My 33' travel trailer weighs in at 7500lbs and the tongue weight is 860lbs. The rear sag is right about 1" and the front sag is minimal (<1/8"). My tongue weight is only 11.5% of the trailer weight. I'd like it to be a little higher, but I'm pushing up against that 900lb limit. I've shifted weight around in the trailer based on past weigh-ins, and I feel better knowing I'm within all the specs of the Expedition.
Here are the numbers from my latest weigh-in if anyone is curious what a scale can tell you: http://towingplanner.com/ActualWeig...=2680&w2da=4440&w2ta=6620&w3sa=3080&w3da=3180
Here are the numbers from my latest weigh-in if anyone is curious what a scale can tell you: http://towingplanner.com/ActualWeig...=2680&w2da=4440&w2ta=6620&w3sa=3080&w3da=3180