Cheaper I only run mud tires.
I set a set of 265/75-16 tires beside a set of 235/85-16 tires.
The 265's were almost 2" shorter.

I think they were Bridgestone Dueller RMT if I remember correctly.

I goofed on the tire size last night, I typed 70 but meant 75.

catbird7, when I load a lot on mine, we are talking 5 tons of rock at a time.

 

Interesting. You wouldn't think two of the same brand/model would be that far off their calculated sizes. Were they mounted? If not, that might be a lot of the difference. The tread on wider tires tends to "dish" when not mounted or inflated, whereas the skinnier tires don't.

If you put a full set of 6 265/75/16"s on a dually it wouldn't matter much - your speedo would be a little off, but at least they'd all be the same size.

 

I drive to much, that is why I went to 285/75-16.
They were 2" taller than the 235/85-16 tires.
Changed to a teal green speedo gear and it is right on the money.

 

10,000lbs in the bed of a pick-up? On single rear tires? Sounds like an accident waiting to happen!

 

Yeah, steering tends to get a little squirrely when the front tires barely even have much of a contact patch. Kind of like drag cars at the speedway, their front wheels dont do much during launch....lol

 

The tire size listed is in load range (D) with a max weight rating of 3305lbs per tire according to my Goodyear chart. With a 10,000lb load on an approximately 7,000lb truck that's 4250lbs per tire. They better be new tires and you better be on a smooth surface. What kind of brake system is on this truck? For gods sake, I hope you don't need to stop quick.

 

AHHH yes, but what does your chart say for load range E tires?

I'd about bet a paycheck that Dave's running at least that - if not something even heavier. Heck, I run E-rated tires on mine and I don't even use it for working.

Rest assured Dave's braking system has been upgraded significantly. I don't remember the details, but I'mm sure he'll share them again.....

You're right though - D rated tires and a stock braking system with that kind of load would be foolhardy - almost suicidal.

 

WOW! Remind me not to buy THAT brand of tires. If you calculate the supposed sizes there should be just under an inch and a quarter height difference between a 265 and a 285. From what you're saying there was closer to 4" difference!

Talk about false advertising!

 

That was years ago, I can't remember the brand names. I do remember that was when I was switching to Bridgestones Dueller RMT, so I know that was what the 285/75-16 tire was. Remember a tire size varies from manufacturer to manufacturer. Even the same size tire from the same manufacturer in the same tire line with different tread designs are different sizes. Set a street tread, All Terrain, and Mud tire of the same size, same manufacturer on the floor beside each other and look at the difference in diameter, you will be amazed. Then start comparing different manufacturers and it gets even worse.

Brakes are hydraboost assist off of a 450. I can still lock them up with gross weights over 16,000 pounds on dry road if I want to.

Load ratings and ply ratings don't come into play till you are driving hours at a time.
What I will haul on my truck for 15 miles is considerably different from what I would haul even 50 miles. Quality tires properly inflated are very capable of carrying much more weight than you would think for short distances. I do this for a living, I pre trip my truck every day. Tire pressure, fluid levels, lights and a visual inspection of everything. No tire failures in 20 years, I think that record speaks for it's self.
I can sit here right now and tell you each of my tires has exactly 65 pounds of air in them which is max inflation for the D rated winter tires I am running. (Sorry Cheaper)

As for the front being light, when you are hauling weight, you have to load it properly not just throw it on the truck or trailer. I have dumped more than one load of rock off in the yard and then told the loader operator to load it right this time or let me do it. I tell them exactly how I want it on the truck, if they want to sell the stone that is how it gets loaded.

 

Uuuuuh, how do you tell my wife "Honey, I lost my paycheck"....?

Oh, nevermind. I said I'd about bet a paycheck - not that I would bet a paycheck..... WHEW! That was a close one! Guess I'm gonna' have to watch what I say.

But you still let me down Dave!

Actually, I am really surprised. I figured your tires would match everything else about your rig. As heavy duty as you can get your hands on....

 

Well I was expecting we would have had snow a couple months ago.
So I put my winter tires on...so I would be ready to plow.
I have not even had the plow on the truck so far this winter.

I can get a better snow traction out of D tires than I can out of E tires due to lower inflation and softer rubber.

 

Hi All,

Hey I don't know were you guy's are, but I put a set of spacers on my '84 that I put a dana 60 in the front. The rear is much narrower. Now I need a set for my '94 F-350. Check your local junk yards for a railroad truck,ie. conrail they have the spacers on them for driving on the rails. They are 2" thick and are an easy bolt-on. Also factory CC's came with 2.5" springs and 34" frames compared to 37.5" frames and 3" springs.

Take care,
Factoryone

 

False! The frame rails are the same distance, don't believe the hype. The 89 F350 in my signature has a bed from a 92 F150 that I've modified to accept the fender flares...perfect fit

 

F series trucks had two diferent frames under them.

F 250 and F 350 SRW trucks had a 37.5" wide frame with 3" wide rear springs.
F 350 duallies, with a pickup box had a 37.5" frame with 3" wide rear springs.


F350 cab and chassis DRW has a 34" wide frame with 2.5" wide rear springs.

The axle under a SRW 250 or 350 is exactly the same axle you would find under a cab and chassis F350, except the spring perches on the cab and chassis axle are moved closer to the center of the axle so they line up with the springs on the narrower frame.

Not hype, just facts.