How does tire size affect your RPM's?

Discussion in 'Ask An Owner Operator' started by FreightshakerClassic, Oct 30, 2021.

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  1. Rideandrepair

    Rideandrepair Road Train Member

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    094AF58F-7AF8-4309-9216-10D7DF73A428.png 22103675-5382-4A72-883B-EF428D41F732.png Might as well throw these two in there.
     
    Rideandrepair, Oct 30, 2021
    #11
  2. Rideandrepair

    Rideandrepair Road Train Member

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    A4F39AE9-6351-4D40-921C-F48874C94D3E.png One more for good luck
     
    Rideandrepair, Oct 30, 2021
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  3. special-k

    special-k Road Train Member

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    It'll be fine. Get your speedometer recalibrated so you won't claim you lost a ton of fuel mileage. Around me a lot of people still use 11R22.5 so you get better money for used tires or casings. That's a regional thing so l would check around or ask your tire shop. I know no one wants my worn out 11R24.5 casing lol
     
    special-k, Oct 30, 2021
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  4. Lalito.1234

    Lalito.1234 Light Load Member

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    hey bro that doesnt sound right cuz we have 2 peterbilts from factory 1 with 11r22.5 and other lp24s both on 355 and do 70mph at 1500rpm, u truck sounds like it should have 11r22s and some one switched to lp22s with out calibrating the gauge or ecm
     
    Lalito.1234, May 12, 2022
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  5. Lalito.1234

    Lalito.1234 Light Load Member

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    also have a t660 with 336 on lp22s from factory and does right around 70mph at 1500
     
    Lalito.1234, May 12, 2022
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  6. scoobertdoo

    scoobertdoo Road Train Member

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    WOW. Thats high. I turn 1500 at 77 with super singles.
     
    scoobertdoo, May 13, 2022
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  7. NYStarcar

    NYStarcar Light Load Member

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    Is it an ex Werner classic by any chance?
     
    NYStarcar, May 13, 2022
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  8. ProfessionalNoticer

    ProfessionalNoticer Road Train Member

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    1500 at 65/70 is pretty common for tons of trucks.
     
    ProfessionalNoticer, May 14, 2022
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  9. Another Canadian driver

    Another Canadian driver Road Train Member

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    The difference in speed is dictated by REV/MILES factor.
    Tire 1 has 500 REV/MILES.
    Tire 2 has only 475 REV/MILES.
    Tire 2 will move the vehicle 5% faster for the same RPM.
    Check on the manufacturer website and you'll see.
     
    Another Canadian driver, May 14, 2022
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  10. Another Canadian driver

    Another Canadian driver Road Train Member

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    Use a GPS Navi system to read the real speed.
    The bad fuel mileage could be because of the higher rev than usual.
     
    Another Canadian driver, May 14, 2022
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