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Thread: Military Trucks - Single vs Dual Rear Wheels

  1. #1
    Senior Contributor JA Boomer's Avatar
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    10 Jul 07
    Calgary, Alberta

    Military Trucks - Single vs Dual Rear Wheels

    Over the past decades militaries seem to have been going back and forth between single and dual wheels on the real axles of military logistics trucks.

    Does anyone have experience with the advantages/disadvantages between the single and dual rear tires? From what I have read, singles provide more traction in mud/snow/ice if you get stuck, but dual wheels are less likely to get stuck in the first place because the lower ground pressure allows them to float better in soft ground.

    Currently military trucks seem to be favoring the singles, which the exception of recovery trucks which have dual rears, probably because they're doing a lot of towing.

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  2. #2
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    Albany Rifles's Avatar
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    27 Apr 07
    Prince George, VA
    Most trucks now have tire pressurization systems. This allows the operators to adjust the tire pressure depending on the travel conditions. This also allows for greater tractions as you mentioned. Also suspension systems are becoming more sophisticated. This precludes the need for dual wheels. The number of axles also determines the amount of cargo one can carry.

    In the US FMTV series the frame is the same but the bed is extended and an extra axle is added to the 2.5 ton to make the 5 ton.

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    NOTE: When you see 2 1/2 ton or 5 ton, that denotes the amount of cargo the vehicle can carry across country. In reality, on paved roads the payload allowance is almost a 2.5 ton can be used as a 5 ton in a pinch.
    “Loyalty to country ALWAYS. Loyalty to government, when it deserves it.”
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  3. #3
    Senior Contributor JA Boomer's Avatar
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    10 Jul 07
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    That all makes very good sense. Is there a reason that recovery/wrecker versions perform better with dual rear wheels? They are the only ones I'm finding that are currently being produced with dual wheels, such as the Navistar MaxxPro:

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  4. #4
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    12 Oct 06
    tire width seems to quite a bit more on current vehicles vs older vehicles too.

    on recovery vehicles I would think (no basis of fact here) that stability and traction as well as lowering/spreading out the ground pressure for recovery on soft terrain would be helpful.

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