Advice: Tire Size

Discussion in 'General IH Tech' started by Ched Graham, Apr 14, 2018.


  1. Ched Graham

    Ched Graham Farmall Cub

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    I have read most the threads on tires size but have a few questions:

    I just finished the reverse shackle. I have 35 x 12.50 R 15LT Mickey Thompson Baja's. I am rebuilding for daily driver, weekend trips to beach, and weekend trips to hunting camp. No plans for mud riding or crawling. I don't want a lot of tire sticking out past the Scout. With that said, I am look to lower the vehicle and I am thinking of going with BF Goodrich All Terrain TA KO2's.

    So the question: I noticed almost all the post had rim size of 15". Talking with 2 local vendors I am told 15" is hard to find and I should consider moving to a 17" rim.

    Is there an issues with a 33 x 10.5 x 17?
    15" vs 17" rim? Pro's & Con's?
    10.5 adequate?

    Pic is of Scout before Reverse Shackle conversion: GOPR0288.JPG
     
  2. scout2000

    scout2000 Y-Block King

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    I went thru a similar exercise a couple of years ago, and put together a pretty detailed tire thread. Given your comment, I'm assuming you already reviewed it.

    Regarding wheel sizes, not sure who you spoke with, but, especially for the IH 5x5.5" pattern, 15" wheels where just about all there was out there. What little I found of 16" and 17" where almost non-existant, and *significantly* more expensive.

    Regarding width, both my wife and my daily driver Scout are running 33" BF Goodrich tires.

    My wife has the 33x12.5" tires, and she is happy with them. She is pretty much stuck with them, given the aftermarket wheels that came with her vehicle. i.e. she would need to do a wheel change to move to a narrower tire.

    OTOH, I'm running 33x10.5" tires on my daily driver 800a. It is a daily driver, and although I have similar design goals, the honest truth, is that it spends 90% of its time driving down the interstate at 70+ MPH.

    33x9.5" tires - at one time, this was an option, and several forum members had shared this with me when I did my thread. My discovery, was that the 9.5" wide 33 tires were no longer offered. I'm sure you probably came across some mention of these when you did your archive search. OTOH, if you (or anyone) discovers that these are being offered again, please share with the forum.

    Final thought - your planned usage, specifically - weekend trip to the beach - when you state beach, sure hope you mean your local fresh water lake and not the ocean. I don't think salt water mist is good for any steel bodied vehicle, but personal observations show that Binders seem more rust-prone to this than most.

    Good luck with your search. Please post a summary after you have your final selection installed and running on your Scout.
     
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  3. scoutpappa

    scoutpappa Farmall Cub

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    I run 33 x 10.50 x R15 BFG KM2s and love them for the truck. 4" RC lift with IHON 5" shackles so they actually look a little small. I also replaced the body bushings with stock replacements. Damn near gained an inch with that.
     
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  4. CazNeck79

    CazNeck79 Binder Driver

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    What gear ratio do you have? If a PO put in 4.56 gears then going to a smaller tire size may not make a decent daily driver.
     
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  5. Darrel

    Darrel Y-Block King

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    Is there an issues with a 33 x 10.5 x 17?

    I prefer 12.50s with 33's and above, but there's nothing wrong with 10.50s if you like the look.
    Is your gear ratio suited to 33's?

    15" vs 17" rim? Pro's & Con's?

    Bigger rims handle better, but take more damage off road.
     
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  6. Ched Graham

    Ched Graham Farmall Cub

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    Line ticket has 3.31 ratio. I am not sure if the PO change anything on this front... I have looked for numbers on the axle but they are long gone... It is not sluggish with the 35x12.5x15 mud tires.
     
  7. Ron A

    Ron A Binder Driver

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    I would pull the diff covers and then read the ring gear. That way you are not guessing. No problem here finding 15". Local BFG dealer can normally have them in a day. I have BFG 33-10.50 15 under one of mine, 4.56s. Going to a 12.50 gives you a few more options as far as tire make goes.
     
  8. scoutpappa

    scoutpappa Farmall Cub

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    Running 3.73's. Good choice with the 727 auto for city driving (tire OD) and trail riding.

    79 Scout II with Dana 44's both ends.
     
  9. Fever

    Fever Farmall Cub

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    Nothing wrong with 15s. Most cars now come with 16"+ making 15 harder to find in stock but not difficult by any means. You'll have more tire choices in a 17 but personally i like smaller wheels. Depending on tire size a smaller wheel gives you more rubber if you air down.
     
  10. winchested

    winchested High Wheeler

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    17s give you more metric tire sizes. 15s more standard US measurement sizes.
     
  11. scout2000

    scout2000 Y-Block King

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    Not sure if your comment is from actual experience, or just a comment.

    Wondering if you have a 17" wheel/tire combo that used the IH (also used by Dodge & Ford) 5x5.5" bolt pattern?

    If so, I would sure like to see what you are running. Thanks for sharing.
     
  12. winchested

    winchested High Wheeler

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    Nope I'm running 15's 32 x 11.5. But 17s are a super common on newer trucks and cars in many many metric sizes.

    31" Tire Diameter
    235/80R17 = 31.8x9.3R17
    245/75R17 = 31.5x9.7R17
    255/70R17 = 31.1x10R17
    265/70R17 = 31.6x10.4R17
    275/65R17 = 31.1x10.8R17
    285/65R17 = 31.6x11.2R17
    31X10.5R17

    32" Tire Diameter
    235/85R17 = 32.7X9.3R17
    255/75R17 = 32.1x10R17
    275/70R17 = 32.2x10.8R17
    285/70R17 = 32.7x11.2R17
    305/65R17 = 32.6x12R17
    32X10.5R17
    32X11.5R17

    33" Tire Diameter
    255/80R17 = 33.1x10R17
    285/75R17 = 33.8x11.2R17
    295/70R17 = 33.3x11.6R17
    305/70R17 = 33.8x12R17
    33X10.5R17
    33X12.5R17
    33X13R17
    33X13.5R17
     
  13. scout2000

    scout2000 Y-Block King

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    Absolutely, 17" and larger tires on newer vehicles are common.

    Sorry I didn't emphasis this more strongly, are you actually seeing wheel size's, aside from the common 15" rim, that have the IH 5"x5.5" bolt pattern? This is the real question.

    I have no doubt you could have copied and pasted a book's worth of non-15" tires here, that was never in question. Being able to put that 16", 17" or larger tire on a wheel, with a 5"x5.5" bolt pattern that can be attached to the axle of 99% of the Scout's, S2's, Binder pick-up's, etc. are another thing.

    Granted, I have observed (here on BP) extreme examples, where owners of 1950's vintage 4x4 Binder owners have been forced to swap out entire axles for more modern units as vintage brake component resources have dried up and disappeared, but in the grand scheme of things, its a somewhat pricey option.

    Just a couple of years back, I researched this pretty thoroughly when I was ready to purchase larger tires for my Scout 800a, along with a thread soliciting input from BP forum members, and, primarily due to the once more popular, but not used much any more 5x5.5" bolt pattern, 15" wheels and tires made up the vast majority of the offerings.

    Granted, my research was a couple of years back, and certainly things can change. If you have, or have evidence of 17" or larger wheel options that we all can bolt onto our Binders that match the wheel pattern, again, I would invite you to share that information.
     
  14. winchested

    winchested High Wheeler

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    Well considering many Dodge and ford's and Suzuki's all share the same bolt pattern yes there are tons of 5x5 or 5x 139.7mm wheels available. However you need a deep offset.
     
  15. 'Mater

    'Mater Binder Driver

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    Even ten years ago I was running 16" rims. 5 on 5.5 with 3.5" back-spacing is one of the most common aftermarket bolt patterns thanks mostly to the fact that it is shared with the CJ series Jeeps. Try to find a wheel for a big six axle.

    Darrel said it best: bigger rims handle better around paved corners, but also take more damage off road.
     
  16. Patrick Morris

    Patrick Morris Dreams of Cub Cadets

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    They are also a bit heavier. There is a bit more steel in the overall assembly when using larger wheels. Not so much fun to change a tire on the side of the road.

    But if the OP is stepping down from 35s to 33s, the weight difference of a 16" wheel won't be a big deal.
     
  17. Mattd

    Mattd Farmall Cub

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    When searching for a 5x13937mm pattern I'm coming up with a lot of different options. Granted you'll have to decide on the offset but I believe you have options if you went to 16" or 17" wheels. When I was searching a few years ago before buying tires I found several options for 16" rims but the price difference wasn't worth it for me since I found a set of 15" rims for a steal from my local store.
     
  18. eightOsix

    eightOsix Binder Driver

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    What about 18" rims? I have access to some take-off 275/70R18 tires (33" diameter) that would look really nice on my pickup.
    Haven't tried to shop, yet. Anybody seen such a rim?
     
  19. Darrel

    Darrel Y-Block King

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    There are dozens upon dozens of 17 inch rims with the 5x5.5 bolt pattern on the market. The problem you'll run into is backspacing since they're targeted towards newer vehicles. The vast majority having over 4 inches which will put your tires into the springs when turning. When I'm shopping for rims I go to a website like 4 Wheel Parts which lets me filter by diameter, width, and backspacing.

    True, but then the tires are lighter. My Toyos only weigh 85 lbs each. :)
     
  20. Patrick Morris

    Patrick Morris Dreams of Cub Cadets

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    Yup. I'd started to say that some of the rubber is 'replaced' by steel. So less rubber and more steel. Then simplified my reply. Longer steel bead too I recon. Steel is so much heavier than rubber.
     

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