Towing a little heavy

Getalab wrote:
Last minute plans all done, and ready to roll 4000k to Alaska for summer. My 08 F250 has a CC weight of 20,000 with max of 5000 on front and rear drive. Across the scales today:
Front drive. 4980
Rear drive 5420
Trailer. 4680
Total. 15,080
I have stable loads installed, and added Firestone airbags running 30lbs of air.
Max rating on front and rear is 6000 lbs each, with max rating on vehicle 10,000lbs, making me 420 lbs over on rear drive. I can remove one propane tank, and shave a few other pounds off rear, but will still be over a little. Any concerns with being over a little, suggestions much appreciated.
Thanks,
Steve

I don't understand your numbers....you state max of 5,000# on front and rear axles, but you say, in paragraph under your numbers that the "max rating" on front and rear axles is 6,000# each:h "IF" that's the case, you're UNDER your rear axle weight rating by 580#...

I'd air rear tires to max sidewall pressure...I'll "assume" they're "E" rated tires? I would air to 80 psi....appears you're pushing the rear axle weight rating, BUT if it's 6,000#weight rated per your second paragraph, you should be ok....Last thing I'd want to do on a towing trip that long would to be OVER my trucks rear axle weight rating.....GVWR? no big deal, most don't use that anymore....I do, but it's a safety thing with me.....I'd make sure you have the right tires for the job and air them to max psi...All the airbags do for you is level the load.....

Do you have a WDH?

You gonna die!!! 4000 miles is a long way to drive that heavy. Folks will disagree with me but I am sure that that 420 lbs is well within Fords CYA factor. With air bags you should be ok,after all a f350 sw is the same truck with a stiffer spring.
Naturally you should look at everything you are carrying and pare down if possible. Send your wife to wal Mart and take out the extra while she is gone.
I would not sweat it. You should be able to tell in the first hundred miles if you are comfortable or not.