Largest full size inflated spare on stock wheel.

Discussion in 'Dodge Ram Power Wagon' started by Grand Mesa, Aug 31, 2018.

  1. Grand Mesa

    Grand Mesa Senior Member

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    I figured that it would shake, rattle, and roll due to it having to fit a 2" receiver vs our 2 1/2" even with a sleeve. Also, one must have a seriously long ball mount in order to tow off of it. Good to know about it not holding up off road either.
     
    Last edited: Sep 4, 2018
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  2. Grand Mesa

    Grand Mesa Senior Member

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    The newer designed General Grabber X3 (M/T) tire in the 315 70R17 has a 34.4" diameter, is Load Range E with a 3 ply tire carcass and 18/32" deep tread with full depth sipes, and weighs in at a whopping 77 lbs. Technically a 8.5" to 10" width wheel is recommended, but other tire brands of this size fit on the stock 8" wide wheel.

    Since the BFG KO2 of this size is stated as 34.4" and fits tightly inflated underneath into the Power Wagon spare tire location, the Grabber X3 should then too. Might go with the Generals on my next set of tires which will be in quite a long while. I would have purchased these X3 tires in my last tire purchase, if I had known about them.
     
  3. m25443

    m25443 Junior Member

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    How about at 30 PSI or so? Would they fit then?
     
  4. Low_Sky

    Low_Sky Senior Member

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    30 psi is almost street pressure for a 35” tire. I drop mine under 10 psi to fit under the bed.


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  5. m25443

    m25443 Junior Member

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    Thanks. Good to know that a 34.8" Toyo MT 35x12.50r17 will fit in the stock spare tire location at 10 psi. I carry a portable compressor, so that would be a workable arrangement for me.

    -Mike
     
  6. Grand Mesa

    Grand Mesa Senior Member

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    For those of us whom live within the Snowbelt, a portable air compressor with a low PSI spare tire may not be an ideal situation to rely on for the replacement of a flat tire during the winter.

    The Smittybilt is stated as the most powerful air compressor in its class. However, it's operating temperature is down to 4 degrees Fahrenheit (corrected on 11/6/18 from minus 4). It's not unusual within many locations in Alaska, Canada, and in the lower 48 including my own to be get much colder. For example...the city of Gunnison, Colorado average low in January is minus 7 degrees Fahrenheit.

    https://www.smittybilt.com/product/index/32.htm

    https://www.usclimatedata.com/climate/gunnison/colorado/united-states/usco0175
     
    Last edited: Nov 6, 2018
  7. Low_Sky

    Low_Sky Senior Member

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    Get a long hose and long battery leads, run a portable from in the cab. Install a built-in under the back seat. Install a built in under the hood. Lots of ways to skin that cat.


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  8. Grand Mesa

    Grand Mesa Senior Member

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    Best to do the same thing with a standard hydraulic jack, if it is used out in extreme cold to change a flat. Unless the jack is factory filled or refilled with synthetic hydraulic oil its lifting capability will be reduced and/or won't lift.
     
    Last edited: Nov 7, 2018
  9. m25443

    m25443 Junior Member

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    Here in Texas that's not an issue for me. But, if it were, then I'd consider carrying a small air tank to fill up the 1 tire.
     
  10. Grand Mesa

    Grand Mesa Senior Member

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    Glad to hear that it stays warm in Texas.

    (Update 11/13/2018 5:30 AM) It's minus 4 degrees Fahrenheit this morning in Gunnison, Colorado where we've been camping nearby. Too cold for most off the shelf air compressors and hydraulic bottle/floor jacks within a cold Power Wagon until warmed up. Even my outdoor thermometer would have stopped functioning at around 0 degrees without the replacement of it's alkaline batteries with lithium.
     
    Last edited: Nov 13, 2018
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