Volvo - Wrong tires size

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by vanostav61, Aug 24, 2022.

  1. vanostav61

    vanostav61 Bobtail Member

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    I own this truck for about a year and few days ago I realized that the drive tires installed are of a wrong size compared to what the sticker on the door says. The door sticker says 275/80R22.5 but tires on truck say 295/75R22.5

    How does this affect the truck, especially considering it's automatic? Should I swap to the correct tire size?

    Truck info:
    2011 Volvo VNL
    D13 with i-Shift 12 gear transmission
    4x6 axles with 3.36 gear ratio
     
  2. Kshaw0960

    Kshaw0960 Road Train Member

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    Makes almost no difference. The 295 tires you got on now are a hair wider than the 275’s. The difference in tire height is so minuscule it isn’t even funny. What is it like half an inch maybe?

    I would keep the 295’s anyway because that is the most common size tire available anywhere and is much easier to keep and replace.
     
  3. AModelCat

    AModelCat Road Train Member

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    As long as all the drive tires are the same size it won't hurt anything. When tire sizes are mixed you'll be turning the differential spider gears and/or interaxle gears all the time.

    I'd be more concerned about overall vehicle height if swapping to taller tires.
     
  4. Siinman

    Siinman Road Train Member

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    As others have said no problems. I did the same thing to my 2014 Volvo since it was more tires that size. No issues
     
  5. Bean Jr.

    Bean Jr. Road Train Member

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    275/80r22.5 should be Michelin size. That is the same as 295/75r22.5.
     
  6. Another Canadian driver

    Another Canadian driver Road Train Member

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    I think that your transmission is an I-Shift ATO 2612.
     
    Rideandrepair Thanks this.
  7. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Nobody said it'll blow up? Lacking...
     
  8. vanostav61

    vanostav61 Bobtail Member

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    The reason I asked is because I know that tire diameter can influence the gear ratio, mileage counting, and considering it's automatic I was wondering if it's not messing with the way transmission shifts.
     
  9. 062

    062 Road Train Member

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  10. Ffx95

    Ffx95 Road Train Member

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