To get an E-rated tire in a 35" diameter, you'll need to convert to 16" wheels and use 315/75-16 tires.
If you want to drop down to 33" tires, you can get an E-rated BFG AT KO in 285/75-16 with a 3750-lb load rating, which is what I run on my F350 that is almost identical to yours (see signature below).
Either way, there are no E-rated 16.5" tires that I know of with a 35" or 33" diameter. The 33x12.50-16.5's I still have on the front axle of my truck are D-rated at 2850 lbs. The BFG AT KO's in 35x12.50-16.5 are D-rated also, but the load weight is 3415 lbs, which is about average for a standard size 265/75-16E truck tire and more than the stock 235/85-16E tires our trucks came with (3042 lbs).
For a full report on my tire/wheel upgrade with lots of pics and load weight information pertaining to our trucks, read my write-up and following RV.net forum discussion about it HERE
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You will have the answer to your questions after you weigh the truck and camper. Get a weight without the camper and another with the camper on full of water,clothes, food, ready to travel. The camper is probably closer to 3500 pounds when loaded. Can you take the camper off and use the old tires to get you to a weigh station? Once you know the trucks weight full of fuel you will have a better idea about which tires you will need.
Thanks for the warm welcome.
My neighbor told me that he weighs his truck at the grain elevator in town. I should have the actual weight soon. With the camper weight of 3500 we will will exceed the GVWR of the truck. Is it possible to have this restated if modifications are made to the truck?
Thank you for the response.
MaK
I would get your real world weights and take a look at it after that. I would not want to exceed my (new) tire capacity or be over rear axle capacity with the fully loaded camper on. If you can stay under axle and tire capacity, then, see if your happy with how it handles and stops with the loaded camper. You may need further modification after that and there will plenty of help from this forum for you to consider.
2007 F-350 SRW 6.0L Auto CC SB 4X4
2006 Outfitter Apex 8, 220W Solar and 3 AGM's
You will have the answer to your questions after you weigh the truck and camper. Get a weight without the camper and another with the camper on full of water,clothes, food, ready to travel. The camper is probably closer to 3500 pounds when loaded. Can you take the camper off and use the old tires to get you to a weigh station? Once you know the trucks weight full of fuel you will have a better idea about which tires you will need.
Thanks for the warm welcome.
My neighbor told me that he weighs his truck at the grain elevator in town. I should have the actual weight soon. With the camper weight of 3500 we will will exceed the GVWR of the truck. Is it possible to have this restated if modifications are made to the truck?
Thank you for the response.
MaK
I would get your real world weights and take a look at it after that. I would not want to exceed my (new) tire capacity or be over rear axle capacity with the fully loaded camper on. If you can stay under axle and tire capacity, then, see if your happy with how it handles and stops with the loaded camper. You may need further modification after that and there will plenty of help from this forum for you to consider.
I can say this much right now... If your camper ends up actually weighing 3500 lbs, you WILL be over the rear axle load limit of 6250 lbs (per the axle manufacturer, Visteon) with the camper on the truck AND a trailer hooked up.
We have the same rear axle in our trucks. My utility body loaded with equipment weighs about 3500 lbs and I am over on my rear axle load limit. I am under on the tires, wheels and springs (over 8000 lbs available on the Stockton wheels, 7500 lbs available on the 285/75-16E tires, 8700+ lbs available on the heavy duty leaf spring packs) but over on the axle by about 300 lbs, WITHOUT the trailer hooked up.
My next upgrade planned is to swap in an 8250-lb Visteon 10.25" axle from a similar year ('86 to '97) F350 dually pickup so I am not overstressing my rear axle, as my truck is over loaded almost EVERY time I drive it. The axles look identical from the outside, but the dually axle has thicker axle tubes that give it the 2000-lb higher weight rating and is about 4" wider overall, to clear the inside dual tire with the leaf springs. My single wheels will fit the dually axle as all other parts are the same.
Thanks for all the great advice. We decided to put on TrXus MT 35/12.5/16.5 tires with 3640 E rating along with replacing all the shocks with Rancho 9000XL's and replacing the steering stabilizers with a Rancho steering stabilizer kit. The truck has existing anti-sway bars in the front and back and overload leaf springs in the back. We plan on having it weighed later today.
Thanks again to everyone. I am very glad to have found this website with friendly helpful people.
Sounds great MaK! It looks like you really jumped on everything in short order. With this in mind, your test drives on- and off-road should be about as good as things are going to get with your rig (short of doing anything heroic and more costly). Hopefully you will find the fully loaded ride to be reasonably stable. If so, you will probably be good to go.
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