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What should the tire pressure be?

Discussion in 'Wheels & Tires' started by bradleydavidgood, Mar 3, 2025.

  1. Mar 3, 2025 at 2:26 PM
    #1
    bradleydavidgood

    bradleydavidgood [OP] New Member

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  2. Mar 4, 2025 at 8:32 AM
    #2
    frichco228

    frichco228 Valued Member

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    If you are running stock tires- follow what is on your door sticker....though I found running a pound or tow more gave better ride and tire wear.

    If you are running non stock tires, different size or load rating, use this tool to determine new tire PSI
     
  3. Mar 6, 2025 at 4:28 AM
    #3
    bradleydavidgood

    bradleydavidgood [OP] New Member

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    Thanks.

    Mine are not stock. They are:
    KUMHO ROAD VENTURE AT52
    LT265/70R18

    When I use that calculator, and choose LT as the prefix, there is no corresponding size in the dropdown that matches.
     
  4. Mar 6, 2025 at 4:33 AM
    #4
    TundraMcGov.

    TundraMcGov. Your friend. Your foe. Not yo Ho.

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    If that is my truck. If those are my wheels. If those are my tires. I'm putting the fronts at 42psi and the rears at 40psi.
     
  5. Mar 6, 2025 at 8:30 AM
    #5
    frichco228

    frichco228 Valued Member

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    On your door sticker, driver side, it will list the OE tire originally installed and also they recommended PSI. Use those details as the OE tire on the calculator, not what is on the truck currently.
    Then enter your "new tire" details either what you are running now or the tire you want to run. It will then calculate the PSI for the new tires. But it does need the OE tire details to make the calculation.

    In your case, 2.5 gen tundras came with either 255/70 or 275/65 in 18 inch wheels. So the PSI for the tires you listed 265/70-18 E load, would run somewhere between 39 and 45PSI- as the front and rears use different pressure and that changes a little base on the original OE tire size.

    But just enter the data for your truck in the calculator to confirm. It really is easy, hope I explained it well enough.
     
  6. Mar 9, 2025 at 9:04 AM
    #6
    bradleydavidgood

    bradleydavidgood [OP] New Member

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    Thank you
     
  7. Mar 9, 2025 at 10:48 AM
    #7
    bradleydavidgood

    bradleydavidgood [OP] New Member

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  8. Mar 11, 2025 at 12:11 PM
    #8
    bradleydavidgood

    bradleydavidgood [OP] New Member

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  9. Mar 11, 2025 at 1:10 PM
    #9
    mtucker

    mtucker New Member

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    Listed in my build thread
    I have those exact same tires on my 2008 DC. Kumho AT52 265/70 R18 I did the chalk test and found the rear liked 38PSI and the fronts had even chalk wear at both 42 and 40PSI. At 42PSI on the rear, the outer edges of the tread were not in contact with the road well (lots of chalk left).
    All chalked up and ready to roll.
    chalk_test.jpg
     
    Last edited: Mar 11, 2025
  10. Mar 11, 2025 at 1:41 PM
    #10
    bradleydavidgood

    bradleydavidgood [OP] New Member

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    Thank you!
     
  11. Mar 17, 2025 at 6:56 AM
    #11
    bradleydavidgood

    bradleydavidgood [OP] New Member

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    How do I know that the main TPMS unit is working properly?
     

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