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Dually Tire Size

Discussion in 'Ford Trucks' started by Mitragorz, Jun 22, 2016.

  1. Mitragorz

    Mitragorz Senior Member
    Messages: 246

    I've been eyeing a local '97 F350 dually dump body to haul around my 2-yard spreader. The truck will need tires.

    I'm in the process of selling my '97 F250HD to free up some funds. the 250 has nearly brand-spanking new Cooper Discoverer M+S, size 265/75R16. Ideally, I'd like to swap them out for some used tires and move the snow tires to the 350, so I only have to buy 2 new tires.

    Do you think the 265s will rub with a loaded spreader? Stock tires sizes are 235/85 and 215/85.
  2. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 12,174

    Can't speak of rubbing, I would be concerned 1st on load range of tires. What range are the new tires? C,D,E?
  3. Mitragorz

    Mitragorz Senior Member
    Messages: 246

    The 265s I'm looking to keep and swap over are E load. I don't have the numbers in front of me, but they're rated for something like 3400 single, 3200 dual.
  4. Sawboy

    Sawboy PlowSite.com Addict
    Messages: 1,700

    I've seen quite a few with the 265's under load. No rubbing.
  5. tjctransport

    tjctransport PlowSite.com Addict
    Messages: 1,390

    265/75R 16 = 32 X 10.50 X 16
    235/85R 16 = 32 X 9.50 X 16
    the 265 is 1 inch wider, so without a spacer between the rims you may experience sidewall rub when loaded.
  6. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 12,174

  7. Mitragorz

    Mitragorz Senior Member
    Messages: 246

    Thanks guys, I already know the size differences between the two :)

    I want to stay away from spacers. I've read plenty of good about them, but I'm afraid that they'll strain the hubs too much.

    What i didn't know is if the extra width is enough to close the gap. I don't know how much room there is between the tires of a dually and what the real-world flex is.

    I guess the best thing to do would be to mount the tires and drop a pallet of cement in the bed. That's about 3400#. Maybe throw another 1/2 pallet on top for good measure and see what the tires do.

    Being 4WD, I don't think running the 235s in the rear and 265s in the front is a good option, despite the difference in height being super-slight. If I'm buying 4 tires I might as well buy 6, right? :gunsfiring:
    Last edited: Jun 22, 2016