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johndeerefarmer's avatar
johndeerefarmer
Explorer III
Aug 03, 2025

Spare tire for MH

Looking at a couple different Super C's on the F600. Both Dynamax and Grand Design use three different size rims. Rear inner is steel, outer is aluminum and front is aluminum.

Some say they just carry a spare tire (no rim) and have a tire service put it on whichever rim has the bad tire. I hate waiting (and paying) and would prefer to do it myself.

I do have the Bead Buster and I have used it with my impact to remove a couple large tractor tires so I should be able to swap the tire out myself on the side of the road.

The other option (from a post on the Dynamax forum): This guy says to just get a spare to fit the front. The buy some through hole lug nuts. That way you can use the tire in any position.

Thoughts on this idea?



If we carry a full spare (tire and rim) will carry it either in the cargo trailer with the Xpedition or if pulling a TOAD in the back of it.

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  • Just dropping by to see if JDF and khiggins have provided anything of substance…..lol. 
    Would seem someone who is claiming to be a farmer and can apparently dismount and mount a med duty truck tire on the side of the road would be able to understand a little more and have more informative responses than “learn to read.”

    • Grit_dog's avatar
      Grit_dog
      Navigator II

      lol guess them fellers either know they were spewing doodoo or maybe just can’t even conceptualize what they’re asking or were so seemingly confident in saying. 
      Good news is for the rest of the world can be pretty confident they won’t have to deal with 3 different size rims on the same truck…

  • Real headache doesn't even come close to describing the new routine for tire rotation. I'm 64 and hate to pay the inflated prices for such things. We're building a new 40x80 shop here on the place for personal use and I'm already shopping for the tire machine and spin balancer. Prices of new construction in this area have gone thru the roof and clear out of sight, so we're putting the new house plans on hold, building the shop and a concrete pad for parking our 5th wheel on when we're home. I rotate tires religiously just about, so paying to have it done on the new F-350 Platinum won't hurt near as bad when I can do it myself here at home. The old Coates style just won't cut it this time. It's gotta have the bead breaker, the power lift/lower and rim clamp design. I'll find the ones with my "name" on them eventually.

    • Khiggins61's avatar
      Khiggins61
      Explorer

      As for my need fir the tire machine and spin balancer, is because I prefer to run Alcoa polished aluminum wheels on the steer axle and the outboard on the DRW, a steel rim inboard, so you see, tire rotation will in fact, involve those tools. 

    • StirCrazy's avatar
      StirCrazy
      Moderator

      I rotate tires religiously just about, so paying to have it done on the new F-350 Platinum won't hurt near as bad when I can do it myself here at home. 

      um don't you get free tire rotations from the place you buy the tires from down there?  or if it is brand new the ford dealership I bought mine from will do a tire rotation when ever I bring it in for the warranty period

    • Grit_dog's avatar
      Grit_dog
      Navigator II

      And a little credit where it’s due, to this guy, IF he’s talking a dually then it’s more likely to do one tire flip rotation on the front tires like I mentioned about the mountain road driving, but only the fronts because heavy duallys running pizza cutters up front will a lot of times exhibit some of the same outer tread wear prematurely on the front tires under “normal” use. 
      Rear tires on a drw?  Meh. If they’re getting feathered a bunch maybe swap them L to R once or twice during the tire life. 
      But removing tires from rims (even on a dually) especially on a srw is an effort in idiocy in most cases save for the cases I mentioned. 

  • I guess I’d ask the mfg/dealer of these $3-400k rigs some very specific questions. 

  • Well my apologies….never seen a normal ish dually truck with 3 different backspacings. 
    And honestly still find it hard to believe. 
    But assuming it’s true, and say the inner rears have the least backspacing or offset, no reason that offset wouldn’t work on outer rear or front. 
    What are the different dimensions?

    Did you visually see this looking at these rigs?  

  • There’s 3 different size rims/wheels?  I doubt it. 
    what makes you think a standard steel rim like your inner rear dials won’t work in other positions?

    Maybe these new dually trucks are special?

    • johndeerefarmer's avatar
      johndeerefarmer
      Explorer III

      Per Grand Design:   "They are all the same tires, but different wheel configurations to accommodate offset and backspacing"