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Ways to find your correct Tire Pressure

Discussion in 'General Jeep Discussion' started by chris4x4, Mar 26, 2017.

  1. Mar 26, 2017 at 8:28 PM
    #1
    chris4x4

    chris4x4 [OP] With sufficient thrust, pigs fly just fine Moderator

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    Ive found that using this method is a good way to find out what PSI you should have in your tires. Given that the placard on the side is no longer valid if you throw on some larger tires.

    CHECKING TIRE FOOTPRINT WITH A CHALK LINE

    [​IMG]

    Park on level ground and aim front tires straight ahead. Draw a line completely across the tread.
    Pull ahead 2-3 tire revolutions or until the chalk starts wearing off.
    If the chalk mark is worn off equally across the width of the tread, the inflation pressure is correct.

    [​IMG]

    If the chalk mark is worn off more in the center than at the edges, as shown here, the tire is over inflated.


    [​IMG]


    If the chalk mark is worn off more at the edges than in the center, as shown here, the tire is under inflated. Keep making tiny adjustments in the tire pressure until the chalk wears off evenly and all the way across the tread. Once you've found the right street pressure, add 10% to all four tires. Then, measure the tires and add pressure to balance them.

    Now, this varies depending on how stiff the sidewall of the tire is, but it can get you close.
     
    Rc Jeep and Bob like this.
  2. Mar 26, 2017 at 8:33 PM
    #2
    chris4x4

    chris4x4 [OP] With sufficient thrust, pigs fly just fine Moderator

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    Also, find a quality gauge, and only use it. Different gauges can vary 5 psi or more from one to another!
     
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  3. Mar 27, 2017 at 8:18 PM
    #3
    JKBob 25

    JKBob 25 Well-Known Member

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    Jersey Shore, NJ
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    2" Superlift kit. 315/ 70/17.
    Thanks Chris. Why do I have the feeling this thread was inspired by me. Lol. But hey...I have a good excuse. Lol.
    Thank you Chris. Don't take your tire pressure for granted. As I did.
     
    chris4x4 [OP] likes this.
  4. Mar 28, 2017 at 7:03 AM
    #4
    chris4x4

    chris4x4 [OP] With sufficient thrust, pigs fly just fine Moderator

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    Ive posted it on another site, but never thought to post it up here, until you and I talked :)
     
  5. Mar 28, 2017 at 7:07 PM
    #5
    C2T

    C2T Well-Known Member

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    2.5" AEV Dual Sport lift, 35" Treadwright Guard Dogs, Black Rock Wheels, AEV Front & Rear Bumpers with Tire Carrier, Fuel Caddy 10 gal. Aux. fuel tank, Warn 9.5ti, 125' synthetic winch line, front axle skid, 20" LED light bar , Bilstein Shocks, steel steering skidplate,
    :jeepwave:
     
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