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What PSI do you run?

Discussion in 'Tires & Wheels' started by 2K1Xplorer, July 9, 2002.

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  1. 2K1Xplorer

    2K1Xplorer Active Member

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    OK the door says 30 psi. The tire says max 50 psi. I've got a bulg comeing out of the tire were in touchs the ground. I am thinkin 40 - 45 psi?
     
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  3. 410Fortune

    410Fortune Snow Season Staff Member Moderator

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    I run 34 psi in my 31x10.5's, of course this is a BII, not a heavy 4 door Ex. The chalk test told me to run 32-36 psi. Sometimes I have 28,sometimes 40, depends on my mood (roadtrips = more # for better mileage, around town = 32# for softer ride). Offroad, about 12-15
     
  4. Fischer

    Fischer Elite Explorer

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    MFG specifications. 30psi front and 35 psi rear. I don't care to jack with it every time the road conditions change. Offroad, sand and rocks about 15psi...

    This is a must in dry soft sand
     
  5. ryster

    ryster New Member

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    I used to run 28psi on all four corners when I had the Goodyear Wrangler RT/S tires on my Explorer. I run 30psi all around now that I have switched to a more aggressively treaded all terrain tire (the Goodyears have a relatively mild tread pattern compared to other AT type tires). I tried 28, but it didn't work all that well so I bumped them up to 30 and they run a little better. Oddly enough, the max pressure for my new tires is indicated as 35psi on the sidewall. Maybe because they only have a temperature rating of "C"? I would never run them at 35psi, but it just seems a 35psi max is low compared to other tires.
     
  6. 2K1Xplorer

    2K1Xplorer Active Member

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    35 does seam low. I have Goodyear Wrangler AT/S tires on mine. I am running them at 35, but there max is 50.
     
  7. pacman

    pacman Active Member

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    I have Goodyear Wrangler RT/S 's and I run 30-32 psi.
     
  8. Robert

    Robert Well-Known Member

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    Straight from the BF Goodrich Tire web-site:

    "Q What is the proper air pressure for my tires?

    A Proper inflation is the single most important factor in tire care. The inflation pressure on the sidewall of the tire is the MAXIMUM operating pressure determined by the tire manufacturer. It is not necessarily the correct tire inflation for your vehicle. You should ALWAYS use the inflation recommended by the vehicle manufacturer. You can find this information:

    In your vehicle owner's manual, or Posted on the inside edge of the driver's door or other door, or On the inside of the glovebox door.

    Always check inflation when tires are COLD, that is, when the vehicle has been driven less than a mile, or at least one hour or more after driving. Use a good quality tire pressure gauge. Note: It is natural for radial tires to have a slight bulge in the sidewall at their proper inflation pressure. Check inflation at least once a month, and before any long trip or before traveling with a heavy load. Always remember to check the spare tire. If your vehicle is equipped with a temporary or "mini-spare," check the sidewall markings for proper inflation pressure. It will differ from the inflation recommendation for your full-sized tires."

    A radial tire will have a slight bulge where it meets the ground. The only time you would have the maximum air pressure in your tires is if you are running the maximum load the tires are rated for. For instance, a BFG 235 75R15 tire is rated at 1985 lbs. at 50 PSI. Estimating that your 2K1 weighs in at 4000 lbs. you would run 50 PSI in your tires if you were carrying 3940 lbs of cargo. The best way to determine how much air to put in your tires is to do the chalk test. You should find 30-35 psi. about right.
     
  9. Brian1

    Brian1 Elite Explorer

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    I run 35psi on road and 25 off road in my 235's
     

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