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22.5x9 steer wheels with 315s

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Tprez22, Nov 5, 2018.

  1. Nov 5, 2018 #1
    Tprez22

    Tprez22 Bobtail Member

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    Nov 5, 2018
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    wanting to mount 22.5x9 steers with 315s on my 2012 T800 with a 12,000lb front axle and I’m wanting to make sure I can. Any help would be appreciated
     
    Tprez22, Nov 5, 2018
    Tprez22, Nov 5, 2018
    #1
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  3. Nov 6, 2018 #2
    Pedigreed Bulldog

    Pedigreed Bulldog Road Train Member

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    You CAN...but WHY? If your axle is only rated to 12K, you aren't going to be able to put more weight up there legally...but you WILL be paying more for the tires AND paying more FET on those tires. You'll likely pay again through slightly worse fuel mileage, too. If your steer axle was rated enough to utilize the weight rating of the wider tire, I'd say go for it. With that 12K axle, though, you're just throwing money away.
     
    Pedigreed Bulldog, Nov 6, 2018
    Pedigreed Bulldog, Nov 6, 2018
    #2
    AModelCat Thanks this.
  4. Nov 6, 2018 #3
    Tprez22

    Tprez22 Bobtail Member

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    I understand the cost and fuel mileage aspect and neither are a worry but I’m working in North Dakota in the oilfeild where 90% of my driving is done on poorly managed gravel roads at 30mph and under. I’m just trying to get a slightly smoother ride and a bit of a wider stance. I’m not trying to go with a 425 at all just a 315. They are not that much wider than standard tire and and the wheel is only an inch wider. I was just making sure I’m not gonna cause unnecessary damage or have any issue before I purchased. I appreciate your response!
     
    Tprez22, Nov 6, 2018
    Tprez22, Nov 6, 2018
    #3
  5. Nov 7, 2018 #4
    Big Orange

    Big Orange Bobtail Member

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    It should work- we put 315s on manure spreader trucks out here. Make sure that the clamps on your steer axle brake chambers will clear. Pinch bolts top and bottom if that makes sense. I’ve seen the clamps cut a nice groove in the inner sidewall when somebody (ahem) was in a hurry to put tires on and didn’t look it over. Total bummer
     
    Big Orange, Nov 7, 2018
    Big Orange, Nov 7, 2018
    #4
    Tprez22 Thanks this.
  7. Nov 7, 2018 #5
    Tprez22

    Tprez22 Bobtail Member

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    I will be sure to check all clearances lol! I appreciate the advice!
     
    Tprez22, Nov 7, 2018
    Tprez22, Nov 7, 2018
    #5
  8. Nov 7, 2018 #6
    Pedigreed Bulldog

    Pedigreed Bulldog Road Train Member

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    ...not to mention, that's an OOS violation if the tires rub any hard parts at any point between full-lock left and full-lock right. If there is contact at or near full lock, you might be able to adjust your steering stops to slightly reduce the turning radius (but keep the tires from rubbing on anything).
     
    Pedigreed Bulldog, Nov 7, 2018
    Pedigreed Bulldog, Nov 7, 2018
    #6
  9. Nov 7, 2018 #7
    Tprez22

    Tprez22 Bobtail Member

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    I should be good honestly! This t800 kinda has a wide stance anyways and PLENTY of room in the fender well. I was more concerned about the wear and tear aspect because as stated it is just a 12,000# steer axle. I’m just gonna try it either way! If it doesn’t work I’ll set them aside for my next truck I’ll have in spring and I’ll buy one spec’d out a bit more for heavy haul.
     
    Tprez22, Nov 7, 2018
    Tprez22, Nov 7, 2018
    #7
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