Super singles on M920

msitework · Jul 2, 2018

Hey guys,
i recently purchased an m920 and a m870 to move my equipment and trucks around. I’m trying to lower the 5th wheel and put a set of 14 20’s on it and I’m going to put a set of 17.5’s on the m870. I saw the rims and tires Sonny used and would love those but unfortunately I can’t spare the change right now, so I was wondering if I could put 5 ton rims and tires on it until I save the coin for the upgrades, appreciate the help guys.

msitework · Jul 2, 2018

Also the M920 is smoking pretty badly, a blue smoke. Do y’all think it needs a set of injectors?

simp5782 · Jul 2, 2018

msitework said:
Also the M920 is smoking pretty badly, a blue smoke. Do y’all think it needs a set of injectors?

Blue is oil getting by. Could be numerous things. White is fuel.

Standard 5 ton combat wheels will work on a 920. There is a thread about grinding the drums down. However remember that 5 ton combat wheels are only rated for 9000lbs each. The tires are rated for 11000lbs. The wheels will break the center out if overloaded.

If you have 11r24s on it now that is 1.5inches shorter than a 14.00. They are 49 inches tall. You can go down to a G177. You will lose road speed but they are 42in tall. But they can handle the weight in dual mode very much. Better than super singles

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tobyS · Jul 2, 2018

Are these the wheels? Henderson 10 x 20 with hub pilot, steel (flange at bolt is 1/2" thick)?

Edit...sorry....was thinking your truck was hub pilot and larger studs.

simp5782 · Jul 2, 2018

tobyS said:
Are these the wheels? Henderson 10 x 20 with hub pilot, steel (flange at bolt is 1/2" thick)?

Hey Wes....would his wheels/tires fit the 322 and make it lower, for a trade?

916s and bigger came with 11R24s. Equal to a 395. So 46inches tall. The 920 uses budd wheels.

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msitework · Jul 2, 2018

Thanks for the response, I also have a set of 395 85 r 20 I believe would work but I’m still limited by the wheels. Would you have any suggestions that wouldn’t completely break the bank? The truck only has 19,000 miles but the smoking is bothering me. I guess I’ll find a local mechanic

simp5782 · Jul 2, 2018

msitework said:
Thanks for the response, I also have a set of 395 85 r 20 I believe would work but I’m still limited by the wheels. Would you have any suggestions that wouldn’t completely break the bank? The truck only has 19,000 miles but the smoking is bothering me. I guess I’ll find a local mechanic

11R24s sell for around $250 a tire/wheel. They are hard to come by so they are sought after. You can go to G177s that are 11.00-20s.They are around 130 to 160 a tire for new ones on a 5 ton wheel. You would have to grind the drums I believe but would be fine.... you could sell your 11R24s and swap to really anything and be ahead. New 14.00s will run you 400$ each. 395s are the cheaper route but lack the weight capacity for hauling anything heavy. Around 9900lbs per tire. Feltz tire in Texarkana would have wheels. Actually SS member Profo has some standard 5 ton combat wheels he will probably part with. He is located in New Iberia and he has them on 14.00s.

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tobyS · Jul 2, 2018

Another possibility...pricey.

https://www.steelsoldiers.com/showthread.php?178459-8-Goodyear-11r22-5-G182-tires-w-wheels

av8or · Jul 2, 2018

Any tires smaller than 1100/24 will cut into your road speed and load carrying capacity. The best front tire is 445/22.5 which will come close in size to the 1100/24 and give you better tires on the front. Your front axle will weight in at about 14,000 empty which is close to or greater than most other tires will handle. The front axle weight is the factor that will make many tires unusable.

msitework · Jul 3, 2018

So does that mean that the 14 20s or 395s wouldn’t be safe? Most of the time the heaviest thing I’ll be hauling is my cat 320 excavator which weighs around 50,000 lbs.

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simp5782 · Jul 3, 2018

msitework said:
So does that mean that the 14 20s or 395s wouldn’t be safe? Most of the time the heaviest thing I’ll be hauling is my cat 320 excavator which weighs around 50,000 lbs.

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They aren't rated for higher capacity. I mean the wheels are the weak link. Some 395s are rated for 9900. Some are rated for 11700lbs like the Michelin XZLs. I don't recommend 5 ton combat wheels for heavy haulers. HEMTT wheels is the way to go they are 13,000lb rated. This was a gcwr of 67000lbs and the wheel broke. Granted the roads around Lafayette will tear a truck and tires up

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Floridianson · Jul 4, 2018

Yea when I did the HEMTT rim and 1600 I had to grind down the front drum on the 920. The rear axles don't need it done. Feels really weird grinding off metal on something that is there to stop you. I sold the truck but replaced the front drums and put the stock wheels back on. Lucky I had two parts 916's. I say if you don't have the cheddar to do it right don't do it. From your pics looks like not a bad level ride.
Had another thought. With super singles when you have a flat on a rear your going to stop. When with duel you might be able to run a little farther till you find a better place to stop and fix.

av8or · Jul 4, 2018

Your front tires are important and older tires may not support the weight that they are rated for. If you blow one at speed you are going to leave the road. Don't take chances with your front tires or rims ,please, I might be next to you. Nice looking rig!

country · Jul 4, 2018

We have these rims, which will work on your M916/920 series truck

All-4998 | 2-Piece Heavy-Duty, Tubeless Super Single Rim
2-Piece Heavy-Duty, Tubeless Super Single Rim Fits HEMTT M977, M978, M983, M984, M985 and M54, M809, M939A1, M939A2 Series 5-Ton Trucks
NSN #: 2530-01-474-5564
Part #: 3175845
Price: $415.00

simp5782 · Jul 4, 2018

You have a few options on a M920 that i have seen work on similar classes of trucks. You can just go down to 11.R22.5s all the way around which means you have to buy tires and wheels. not alot of great traction tires available though for any offroad use. or Another cheap route is to buy all the steel 22.5 wheels you would need. Used ones are about $20 each. Then go with a 275/70/22.5 It is not really tall but it is a transit bus tire with 9000# each rating. You can run duals in the rear. They are cheap for virgin retreads on ebay.

another option is to go with 12R20s. These are a little harder to come by but give you better steering options. You can run a 12.00R20 in dual mode on the rear and a 395/85/20 up front on a HEMTT wheel for a wider steering tire. Just don't skip out on wheel ratings. Make sure you check em.

You also have the option of a 315/80/22.5 as this is the heavy haul tire used by the military on the newer M916s pretty pricey but an option.

I would personally go with G177s on the rear of the truck. They are 11.00-20 and can support plenty enough weight and they are found for around $150 a tire/wheel then I would run a 385/65/22.5 up front as a steer tire. Much like what comes on a dumptruck or cement truck. 385s are 42" tall as are the 11.00-20s. You would just need to figure out the offset you need for the front wheels.

tobyS · Jul 4, 2018

My Michelin XZL 395 shows max at 12,300# and the 14.00 GY AT-2 has a max of 9,960# as single.

Floridianson · Jul 4, 2018

country said:
We have these rims, which will work on your M916/920 series truck

All-4998 | 2-Piece Heavy-Duty, Tubeless Super Single Rim
2-Piece Heavy-Duty, Tubeless Super Single Rim Fits HEMTT M977, M978, M983, M984, M985 and M54, M809, M939A1, M939A2 Series 5-Ton Trucks
NSN #: 2530-01-474-5564
Part #: 3175845
Price: $415.00

Still have to grind away some drum for them to clear the valve stem.

simp5782 said:
You have a few options on a M920 that i have seen work on similar classes of trucks. You can just go down to 11.R22.5s all the way around which means you have to buy tires and wheels. not alot of great traction tires available though for any offroad use. or Another cheap route is to buy all the steel 22.5 wheels you would need. Used ones are about $20 each. Then go with a 275/70/22.5 It is not really tall but it is a transit bus tire with 9000# each rating. You can run duals in the rear. They are cheap for virgin retreads on ebay.

another option is to go with 12R20s. These are a little harder to come by but give you better steering options. You can run a 12.00R20 in dual mode on the rear and a 395/85/20 up front on a HEMTT wheel for a wider steering tire. Just don't skip out on wheel ratings. Make sure you check em.

You also have the option of a 315/80/22.5 as this is the heavy haul tire used by the military on the newer M916s pretty pricey but an option.

I would personally go with G177s on the rear of the truck. They are 11.00-20 and can support plenty enough weight and they are found for around $150 a tire/wheel then I would run a 385/65/22.5 up front as a steer tire. Much like what comes on a dumptruck or cement truck. 385s are 42" tall as are the 11.00-20s. You would just need to figure out the offset you need for the front wheels.

I bought some reconditioned wheels and 11x24.5 tires and the wheels were still not correct. They did not have valve stem problem but they also hit the drum just a tad and did not seat completely up to the drum. They looked like they did but were not correct and I asked the tire shop before I did it When changing on those trucks you must be sure of the measurements of the wheel to drum. My .02 stay with what you got for now.

silverstate55 · Jul 4, 2018

On my M920 I could not fit any 20-inch wheel over the front brake drums; I tried some steel 22.5-in wheels, and these would not fit either (brake drum diameter too great). So I borrowed some 24.5in wheels and they fit just fine.

The M916A1 (Freightliner) front drums are slightly smaller diameter that allow the fitment of 22.5-in wheels.

The rear axles accept 20-in wheels just fine.

winfred · Jul 4, 2018

yea really, lost a dogbone that i had plated on the deuce when i recovered my 105 in jenerette, would probably be smoother driving in the field next to the road

simp5782 said:
Granted the roads around Lafayette will tear a truck and tires up[/ATTACH]

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Floridianson · Jul 4, 2018

Bob what was the other military wheel that fit right on the front. The MK48? it can be run with the HEMTT rims and 1600 on the rear because the size is just about the same if you want super singles.

Super singles on M920

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