Tires: Tires & Hitch Weight, dual pane windows, dj sounds

Question
Order and received a 2007 Cameo by Carriage in April 2007.  Labor Day 2008 had a tire go bad - front tire on driver's side. This is the same side with the fridge, stove/oven, microwave, sink and entertainment system in the slide-out.

Max fresh water carried is approximately 1/3 to 1/2 tank and other tanks are emptied before leaving camp site.

Trailer GVWR is 16,124.  Tire rating - single 3,520 for total 14,080 and dual 3,080 for total 12,320.  Trailer was ordered with dual pane windows, generator prep (no generator yet), washer/dryer hook-up.

Carriage was contacted and has basically replied "sorry about their luck but tire problem".  In our reply to Carriage, we feel the trailer actually came with the wrong tires.  Their response 20-25% of the weight should be on the hitch.

In doing further research on the Web, max weight on the hitch recommended is 20%.

Doing the math, @ 20%, weight is 12,899 and @ 25%, weight is 12,093.  Using the "recommended 20%", the trailer still came from the manufacturer over weight for the tires.

Trailer is at the Dealership and they feel tires are bad.  Tire was taken to local Goodyear dealership and they feel tire broke down.

Do you have any recommendations for replacement tires?

No, the trailer/truck have not been taken to scale to actually check weight.  And have a F450 to pull the trailer so know it can handle the extra weight.

Thanks for any guidance you can provide.

Answer
DJ,

Sounds like you have done a lot of homework.

It's been my experience that trailers need to have a 15% reserve capacity - that is the GVW minus the hitch weight (which I've heard should be in the 10% to 15% range, so 20% max sounds right), so the load on the tire should be no more than 85% of the max listed on the sidewall.

I would suggest you weigh the trailer in a worst case condition - that is as much stuff as you can ever imagine you'll haul - including all tanks full:  white, black, and grey.  Yes, I know that water flows into the black and grey tanks.  A good design engineer would know it is possible that all 3 tanks could be full and should account for that possibility in selecting the load capacity of the tires.

But other than that I have no other suggestions.