Forum Discussion

The76Fireball's avatar
Aug 13, 2016

Problems replacing 1976 Dodge "16.5 rims to common size

Hi everyone I'm having a hard time trying to replace the tires on my 1976 Dodge RV. I took it to my mechanic who said I have 16.5 inch tires that are no longer in production. He decided that it'd be best to switch out the rims to either 16 or 17 inch rims since tires for those are readily available. And cue the current problem. He found after researching that the rims have alternating "nipples" as he called it. On most wheels the holes in the rim are flat but half the holes on my rims have that nipple or lip turned inwards and half turned outwards. Apparently he can't put on the flat holed rims because only half of the 8 bolts would be secure and eventually the wheel would come loose. He also found that the rims are now hard to find because obviously it was a flawed design. I still see lots of old dodge RVs on the road today so it must be done somehow. He mentioned something about them being dually rims. My question is does anyone know of a place that would have the dually rims or know of any adapters or something to make new rims work?

15 Replies

  • NEWER Dodge wheels. To really confuse things, Dodge wheels can be used on other 8-lug applications, but not the other way around. Be ABSOLUTELY certain that your new wheels are the same width and the hub center line is the same as the old wheels. Been there done that with an early GM pickup. The 16" sacrificed a bit of stability for improved ride comfort.
  • Hi Kyle,

    I responded to your question on the clipper site but will repeat here for sharing.

    I believe there is a company in Oklahoma that sells the coin style rims - a fellow clipper owner was dealing with them. If I get the name i'll post it.

    I use the transforce on my clipper and they work great. No need to change out the rims, etc. Check online for best pricing and then call your local shop to see if they'll match it - most will.

    You can also check wrecking yards for the 16 inch coin style rims - they are out there.

    I have never heard that they are flawed - they're just an outdated design (our clippers ARE 40 years old after all).
  • j-d's avatar
    j-d
    Explorer II
    I saw a "B" series (cut-away Van "Nose") Dodge chassis under a Class C out in Oregon and it had the 16" wheels. I wanted to catch the owner and ask what he'd used, but I didn't connect. Suffice, it CAN be done.

    You have what's known as "coined" or "keyed" wheels. Every other hole is either recessed or raised, right? And there's a pin in each rear hub that lines up with a small slotted hole in each rim...? That's to make sure the rear outer "coins" line up recesses and raises with the inner.

    Unless somebody here just jumps out with the interchange info:

    gOOgle "dodge coined wheels" and you'll see pages of hits, with the answer buried someplace within, I'm sure. Just beware that Pickups may have different wheel specs than cutaways/cube vans, and may have switched away from coined in different years.

    A salvage yard may be able to help if they'll take the time to look up the interchange. There used to be a book or service "Hollander Interchange" and maybe there's something on line.

    You have to match

    Centering: Lug, Piloted or Coined

    Number of Lugs

    Lug Circle

    Dual Wheel Offset

    Rim Width

    ... and probably more

    That said:

    Firestone Transforce is a very good tire. gOOgle 8.75R16.5LT and you'll get lots of hits. Transforce seems to be one of the few (if not only) name brand among acres of off brands and cheapies.

    A member here, capriracer, has a site called Barry's Tire Tech and it has the 16.5 page I linked. Helps determine a good 16" tire to swap into.
  • Welcome to the forum.
    I don't have the answer, hopefully another member will have the info you need.

    Did you search online for a Dodge Motor Home Forum?
    Someone has your answer, it's just not me.

    Is your 76 Dodge a Class C or Class A?