I'm going to need to replace all 6 23585R16 tires on my Late '99 F-350 Dually soon due to age and some dry rot and cracks starting to appear.
I'm considering going to load range D tires over the current load range E that is on it now.
I rarely haul anything heavy, but do tow our 36' TT a couple of times per year under 100 miles 1 way.....
Am I asking for trouble doing this? I'm also thinking a liter load range tire would ride smoother too.....

I know that the EARLY '99s Ford says 60psi in front, and 40psi in rear on Duallys.
MY LATE '99 Dually says 60 front AND rear.
What changed from early to late?
If I run 60 in my rears with no load my tires only contact about 2' in the center, so I run the "early" 40psi and my tires wear well....

I know the load range D tires are only rated for a max psi of 65, I don't know that I need a load range E rated at 80psi max to do what I need to do.....

 

 

The problem I see is that load range D tires is that they ballon out much more than E rated tires, and since you have a dually the rears can possibly rub even at maximum tire PSI, just a thought. If it were me just get Ecrated tires and not risk it.

 

 

 

I currently have Ds on my truck. Looking at the squish I really wouldn't recommend them for a dually or pulling any real weight. I only pull an open deck car trailer and I think that's about the limit.

 

 

I vote no.

I had a 6.5 chevy dually. Hauled untold loads of wood. Had to embark on new tires. Hmmmmmmmmmmmm, it does ride rough. D range were pretty in the wallet/ here we go.

Couple of loads of firewood loaded to the gills along with a 24 sevice trailer loaded w 20, I have a notably odor of rubber burning, Check the leaves and walk compltetely down wind of my truck, and went to the rear wheels like a service dog.

My duals were actually doing the strange thing the whole time. It squatted them even at 77psi.

I'd shtick w/E!!

Denny

 

Just reread, thank god I'm still not in school!!!

Go w/ E'Z

 

Get E rated tires, they are easier to find and you aren't going to gain anything by getting D rated tires.

 

Another thing to consider -- when you are on the road and need to replace a tire, how common is a D?

 

Thanks guys for all the great imput-I hadn't thought about the chance of the rear duals rubbing with a D rated tire...…

I think I'm just going to stay with the E rated tires.

I've had experience with the original General tires that were on it, Cooper Discoverer H/T, and my current tires are Firestone TransForce.

We really don't drive the truck that much-it only has 153k original miles on it now.....

I don't want or need to put "cheap" private label tires on it nor do I want to put the most expensive name brand (Michelin) on it either.....

I run the original size 23585R16 size and my truck is 2wd, so no need or want for off-road type tires.

Suggestions on brands and models of tires are sure welcome guys...…

Are there any tires in my size that are made in the USA?

Thanks Again!!

 

 

Thanks John, I took a look at those and they are more aggressive than I really want, I have always run highway tread tires, the only off-roading I do is gravel driveways at campgrounds once in a while...…..I love my Firestone TransForce that I have now, just looking at other options/opinions......