11R22.5 to 295/75r22.5 What will I lose or gain

Discussion in 'Ask An Owner Operator' started by silver dollar, Jun 21, 2021.

  1. silver dollar

    silver dollar Medium Load Member

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    Greetings. I have a 2007 Volvo day cab with D12 465hp engine, 10 speed trans, and 3.58 rears. Truck has 11R22.5 tires. It's near time for new tires. Should I switch to lowpro 22.5, which my two trailers run? Or should I stick with the 11R's? What will I gain or lose by switching to the lowpro's? Truck currently averages 6.5 mpg. Thanks.
     
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  3. Brettj3876

    Brettj3876 Road Train Member

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    Your rpms will go up by about 100-150 at cruising speed
     
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  4. Dino soar

    Dino soar Road Train Member

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    I hate Low Pro Tires. I may be in the minority but I hate them.

    They say you have less rolling resistance so maybe you will get a little better mileage I don't know. But they are closer to the rim and that's got to make your truck ride more rough. And I think they look ugly to boot.

    If Al Bundy had anything to say about it, he would call them mamby pamby girly man tires. And he needs a man-sized flush like his father... I guess that's for another thread, lol.

    Ugly:
    Freightliner_Classic_Grill__98468.1443555421.1280.1280.jpg

    Nice:
    b6d868e21dd16dca002f6341333fb02b.jpg
     
  5. skallagrime

    skallagrime Road Train Member

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    At the same psi, youll mostly loose a little load rating, rpms to maintain same speed will be 100-150 rpm higher, (that may be good, may be bad for your setup, not sure, i went the other way and had to drop a gear to maintain my rpm at where i was because that was already the sweet spot, you dont have another gear to hit going higher so if you run too low a rpm, thats a good move, if already correct or too high, prepare to drive slower.

    Mpg will increase marginally on better rolling resistance (.5% better) (but see previous paragraph, driving style and rpm make more of a difference) ride will be 5% stiffer (mpg will *look* worse unless you correct your odometer to what the truck now has)
     
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  6. Rideandrepair

    Rideandrepair Road Train Member

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    Might be just as easy to eventually switch the trailer tires out.
     
    silver dollar Thanks this.
  7. Final Drive

    Final Drive Road Train Member

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    20210622_021017.jpg
    Ok
    I respect your opinion...
     
  8. Brettj3876

    Brettj3876 Road Train Member

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    Even regular 22.5 on a large car doesn't look good imo. I can deff tell the ride differences too, tall 24.5 is easier to keep straight than lo pro 22.5

    I think 24.5LP looks good tho on a large car
     
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  9. ‘Olhand

    ‘Olhand Cantankerous Crusty

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    Might want to ck availability of 22.5 standard....22.5 lo easily found standard 22’s aren’t typically carried by many anymore
     
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  10. silver dollar

    silver dollar Medium Load Member

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    Thanks everyone. I'm gonna stay with the 11R's on the tractor and switch the trailers to 11R's when they need tires. Thanks again.
     
  11. skallagrime

    skallagrime Road Train Member

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    No need outside of wanting to rotate your steers into the trailer. But not a bad plan, think sending your 11r22.5 drives to be capped and save em up till youve got all 8 to pop on your trailer if thats an option
     
    silver dollar Thanks this.
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