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Wide tires on skinny rims?

Discussion in 'The Garage' started by TexasA&Mblazer, Oct 12, 2005.

  1. TexasA&Mblazer

    TexasA&Mblazer 1/2 ton status

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    I know its a dumb question but I searched and searched to no avail. :o

    So my question is: what is the smallest rim width I need for 14.5, 15, or 16 inch wide tires? I was hoping to use some 10 inch wide rims, but I want wider tires. :( By the way, if you're interested, the tires I'm interested in are the 38.5X15X15 Boggers, 38.5X14.5X15 TSL/SXs, 38X16X15 TSLs :D .

    Any help is appreciated!!!
     
  2. Brocky

    Brocky 1/2 ton status

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    10's will be fine for almost any size IMO. I have been wrong before tho. I know guys running big tires on these.
     
  3. joez

    joez 1/2 ton status

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    8" for the 14-15" wide tires, and 10" for the 16" wide. You could get away with 8's on the wider, but the bigger the difference the funnier they wear. Ive run a 12.5" wide tire on a 5.5" wide rim, and its almost like having beadlocks.
     
  4. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    well i run my 39.5x13.5x16in iroks on 16x6.75in rims :eek1:
     
  5. TexasA&Mblazer

    TexasA&Mblazer 1/2 ton status

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    OK guys thanks for all the help, looks like I'm going with a 8 or 10 inch rim. Next question is, what backspacing do you think would be best for tires this wide?
     
  6. muddybuddy

    muddybuddy 3/4 ton status

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    what axles u got?
     
  7. TexasA&Mblazer

    TexasA&Mblazer 1/2 ton status

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    3/4 ton 14ff and a 3/4 ton D44. :laugh:
     
  8. muddybuddy

    muddybuddy 3/4 ton status

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    what size rim u wanna run? 15s u might have to grind the front a lil.

    it depends on how much u want the tires to stick out of the wheel well. the lower numerically, the farther out they will stick.
     
  9. Brocky

    Brocky 1/2 ton status

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    Geez, and I was worried about getting wide tires with 8 inch wide rims. I have a set of 10's for wider tires but may get rid of them now in favor of some other parts.
     
  10. TexasA&Mblazer

    TexasA&Mblazer 1/2 ton status

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    So how far in would 4 1/2 be compared to 3 1/2? Any preferances?
     
  11. muddybuddy

    muddybuddy 3/4 ton status

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    well what size rim are u going to get? 15?16?17?
    i personally like the tires to stick out, i jus bought 15x10s with 3"back spacing. before i had rims with 4.5" back spacing
     
  12. TexasA&Mblazer

    TexasA&Mblazer 1/2 ton status

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    I'm probably getting 15s. Maybe 16.5s.
     
  13. prossett

    prossett 1/2 ton status

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    OK, this is based on the driving I do in the sand, but the general opinion here (Empty Quarter) is that too narrow rims will have the wider tires popping off at low pressures.

    [​IMG]
     
  14. monster man

    monster man 1/2 ton status

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    on those axles, I can almost guarantee 4.5" would require grinding. Mine are at 2.75" on 8" rims and no grinding was required. They're skinny tires though, 2.75" would look wierd with 15" tires. I'd suggest 3.5" on an 8" rim.

    I really like the tires to stay up in the wheelwells if possible, I think that looks best
     
  15. afroman006

    afroman006 1/2 ton status

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    Try to get the backspacing as close to the center of the wheel as you can within reason. You want to keep the scrub radius to a minimum with tires that large since I assume you wont be running hydro assist. Plus it usually helps with body clearance issues.
     
  16. 6.2Blazer

    6.2Blazer 1/2 ton status

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    ..........................1"

    You can fit as wide of a tire as they make on a 10" wide rim.
     
  17. neverendingproject

    neverendingproject 1/2 ton status

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    Dont want to be a thread stealer but is a 33x12.5 too big for my 15x10's??????
     
  18. hunterguy86

    hunterguy86 1/2 ton status

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    Concerning backspacing, I remember reading somewhere that its best to match the back spacing of your stock wheel, keeping the centerline of the wheel the same as the stock wheel. Thus, not adding extra stress on the wheel bearings. For example, lets say your factory 8 inch rim had a 3.5 inch backspacing. If you went up to a 10 inch wide wheel you would spread these extra 2 inches to each side of the wheel, 1 inch per side, giving you a back spacing of 4.5 inches. Granted, larger tires do add stress to the bearings. I could be wrong here. I'm sure someone else here could elaborate more on this.
    Please correct me if I'm wrong.
     
  19. blackblazer717

    blackblazer717 1/2 ton status

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    prosset,

    i think you have that backwards, if you have a rim too wide for a tire it could break a bead, if the rim is skinnier it almost acts like a cheep beadlock

    ive got 15x10's and a 38.5x15x15 tire and the 10 inch rim is awesome and i have never broke a bead even at spressures as low as 9 or 10 pounds. also the tread doesnt wear nearly as funny as if it were on a 8 inch rim.

    neverendingproject....
    a 33x12.5 is fine on a 10 inch rim and also on an 8 inch rim no issues.!

    LUKE
     
  20. 74757685k5

    74757685k5 1/2 ton status

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    I had my 38.5x15 boggers 0n 8.25 wide wheels.it was wearing the center to fast.now there on 12 wide.IT looks a lot better.
     

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