9:00 V 11:00 tires

[Andrews CC]

I can not find a thread on the basic advantages to changing from stock 9:00 tires to 11:00s? (on a standard M35 for highway use with 4000 lb load in back).

Speed of course will increase because of the larger tires, but with additional load on a diesel engine, does fuel mileage change?

With the substantial additoinal cost for the larger tires, there must be more reasons to change than 5 MPH.

Where can one find new or good used NDT or NDCC tires in the west?

Thanks

 

[dozer1]

In theory, the fuel mileage should increase at a given actual speed. Say 55 mph as read by a GPS. That would be due to slower engine RPM. Otherwise one of the biggest reasons to make that change would just be for a bigger, beefier look. They would have better flotation as well, but that would mean little to you for highway use.

 

[goldneagle]

Since the 11.00 have a much greater weight capacity you can single out the backs. If you choose to dual the backs you have a much better safety margin for weight. Your main restriction would be the frame and brakes. You also have 4 spares on the truck all the time with duals since you only need singles in the back.

11.00 NDT sell cheap! Usually available from members that are super-singleing out their 5 tons.

Another option is 11.00/20 XL's. They have a much more aggressive tread. Availability is not as common as NDT and much more expensive.

 

[DUG]

I put 11.00s on my deuce not to increase speed, but to reduce engine RPMs at my usual 50-52 MPH highway speeds. Fuel mileage probably improved since the engine isn't turning as many RPMs, but I don't track my deuce mileage.

 

[HASSON1911]

I put 11.00s on my deuce not to increase speed, but to reduce engine RPMs at my usual 50-52 MPH highway speeds. Fuel mileage probably improved since the engine isn't turning as many RPMs, but I don't track my deuce mileage.

And you probably don't want too. just to make sure 11.00 ndts those fit on original rims and can still be duel right?

 

[smoke]

yeah still fit original rim just have to change tubes and flaps for 11. and still fit duels in back

 

[Danger Ranger]

You want to be on the highway, so why don't you get radials, like the GoodYear G177 or the Firestone T831? Radials would have better handling, traction, milage, and would last longer.

 

[DUG]

And you probably don't want too. just to make sure 11.00 ndts those fit on original rims and can still be duel right?

Fit is perfect, like they were made to go there. Oh wait, they were.

I run duals in the back.

 

[Bob H]

Switched from 9.00-20 NDCC to 11.00R20 XL

Benefits;
Ride quality, <--all I can say is WOW!
Noise reduction.
Rpm reduction

Liabilities;
Increased braking resistance*
Increased torque load on driveline*

* within design specs

Fuel mileage? What's that? Don't know what effect it had.

 

[sandcobra164]

Because you can, they look tougher and you want to since you started the thread!!! I'm staying with the duels even though I don't need the capacity, they just look mean don't they. I may even switch to 395's on the front since they're supposed to be about the same OD.

 

[toddm]

Because you can, they look tougher and you want to since you started the thread!!! I'm staying with the duels even though I don't need the capacity, they just look mean don't they. I may even switch to 395's on the front since they're supposed to be about the same OD.

I like the way your truck looks I just recently switched my singled out Deuce to duals again, I think it looks a lot more like it should. That is just my opinion though. I used 11.00-20 Goodyear G177's.

 

[panshark]

OP-
A lot of guys become concerned with the load rating of the 9x20 steer tires (NDCC), the weight that is on them is close to max load. 11x20's have a higher load rating. Tire wear is supposed to be less with the 11's, due to different rubber compound.

I got mine out of Fruitland ID, on the Oregon border west of Boise. $125 per tire. Communication before purchase was a small problem, I ended up having to pay $150 to include the wheel, and had to get my old wheels shipped back to get the $25 refund. Other than the availability/commo snafu, Idaho Motor Pool was a good group of guys and I would do business with them again. They did take the time to let me handpick the tires that I wanted, which meant moving a bunch of fully inflated tires around in the middle of the summer.

The 11" tires do make your truck sit up a couple of inches higher, so if you're short, you're going to have a bigger step up to get into yer truck.

 

[chadande]

I did it so I could run at a comfortable 60mph on the highway. I purchased all 10 on 5 ton wheels for $100. I think I paid another $300 to have them installed on my truck with new tubes for the fronts. Then I sold the 10 5 ton rims for $75. I ended up finding another one to mount in the spare location.
The truck looks, steers and just feels better with the 11x20's.

 

[dozer1]

I did it so I could run at a comfortable 60mph on the highway. I purchased all 10 on 5 ton wheels for $100. I think I paid another $300 to have them installed on my truck with new tubes for the fronts. Then I sold the 10 5 ton rims for $75.
The truck looks, steers and just feels better with the 11x20's.

nice

 

[chadande]

nice

Yeah, I got them at a place that refurbs 5 tons. Since they single them out they have lots of old NDCC tires and rims that they needed to get rid of.

 

[3ID ARMY BRAT]

where is this place and how do i get in contact them, I think I would like to put 1100x20 on my truck. I do a lot of heave hauling with my truck. And i would like to get closer to 65mph.

 

[chadande]

where is this place and how do i get in contact them, I think I would like to put 1100x20 on my truck. I do a lot of heave hauling with my truck. And i would like to get closer to 65mph.

This is the place. Not sure where they are on prices nowadays, but great guys to work with!

Military 6x6 Trucks, Generators and Parts - Oshkosh Equipment Sales, LLC

 

[emr]

Truth is the 900s will do all your truck was designed to do, but the Mil in the desert wars have put 1100 michelins on deuces in theater, why? simple always the next size up in sand , like the m 38s as an example in the TMs they came with 700s but in sand service they were told to use 750s, sand and rocks wider tires and mud and snow narrow tall is the basic rule, some always say there set up is the best, and im sure it is, but that rule is tried tested and true, as for whats better, it is a personal decision, mostly, but for sure with all that said the 1100s are a better all around choice, duels are more stable than singles running loaded , but as tests have shown singles go further off road, but the driver has alot to do with that too, it has to be an apple to apple test, I run 1400s on my 5 ton for the looks and know there will hardly be a time my truck is tested that that fine margin will be needed between the 2 different sets, I always go for military tire designs on my trucks, I like authenticity , My personal opinion is civy tire treads look silly on em, but thats me... The G177s are crazy awesome tires, Oh, duels last alot longer than singles too, all info for your choice, it really is a choice with these trucks and what u want and feel comfortable with, all the best...

 

[dburt]

I left 900's dualed out on the back of my deuce, but went with a 900 14 ply radials with tubes on the front for better ride, load capacity, easier steering and safety since the original tires made me suspect of thier age and overall safe condition for use as steer tires.
The truck rode and steered much better! 1100's are nice if you can afford them. I do like radials better for ride, and steering control. Never put radials on the back and bias on the front- not a good combo! (Learned that lesson years ago in my younger days!) But for the most part, you can put radials on the steer axle and leave bias on the rears. If you can afford it, go with the 1100's.

 

[3ID ARMY BRAT]

I think i will go with the 1100, look like i will be making a trip to Wisconsin. thank yall for the info.