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PSI for different conditions?

Discussion in 'Off-Roading & Trails' started by Fightnfire, Jun 24, 2011.

  1. Jun 24, 2011 at 10:28 AM
    #1
    Fightnfire

    Fightnfire [OP] Recklessly tired

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    I'm relatively green in both my Tacoma and off roading in general. I have spent a fair amount of time in other trucks in snow/ice/mud etc. but the thoughts of airing down, or up, never occurred to me.

    I found recommendations for sand but I'm not having any luck searching for recommendations for snow/ice/mud etc.

    Any advice? Also, how far is it considered ok to drive to air up at 10-15 psi? I will be looking into getting a compressor to throw in the truck when we're heading to the beach, but just in case.

    Sand - 8-15 seems to be what I am reading

    Snow - Is this different for 4-6" of fresh snow over ice compared to 12-20" of powder over gravel or ice? This is the majority of what I will be off roading in as I live in Seattle and regularly go over our mountain passes to the east side of the state. Typically the roads will be compact snow and ice, but I like to play in the snow :D

    Mud - ?

    Rocks -

    Thanks!
     
  2. Jun 24, 2011 at 2:04 PM
    #2
    maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    Too many
    I would say especially for someone new who can't judge conditions as well to stick to 15 for pretty much everything.

    I will air down to 10 sometimes in soft fresh powdery snow. I stick to higher 12 - 15 for harder packed snow. About 15 or so for most rocks and trails.

    Just my .02

    YMMV


    I wouldn't drive on road at all.
     
  3. Jun 24, 2011 at 3:20 PM
    #3
    UMBCrew

    UMBCrew Well-Known Member

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    Just remember when you do drive on the road at a lower pressure to keep your speed down. the lower your tire pressure the slower you should be going on the road but still always try to get to a compressor or service station as soon as possible to air up.

    I never really air down in the snow or ice but I have always carried chains no matter how good a 4 wheel drive or how good or big of tires. I may be wrong but i was always under the impression that in snow and ice the same goes for mud you actually want a smaller tire footprint so that your tires cut through down to the road or in mud down past the mud into to hard dirt. The exact opposite for sand, i do a lot of sand driving and you air down so that you float on top. I guess soft powdery snow might similar to sand but hard snow and ice I personally do not want to float on. Carry good chains either way they can literally be a lifesaver.
     
  4. Jun 25, 2011 at 8:21 AM
    #4
    maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    '

    Off road in the deep stuff you want flotation. On road yes.
     
  5. Jul 11, 2011 at 12:43 AM
    #5
    cdub2002

    cdub2002 Active Member

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    I live south east of Portland Oregon and drive to snowboard on Mt. Hood a lot every winter. I always bought good tires for me vehicles (jeep, 4runner, jeep, now tacoma!) just because of this. I never aired down or used chains once in the last 5 years of driving. I will air down this coming winter just to see how my truck does cuz a truck on snow and ice is way different than those SUVs and manual vs automatic makes it more tricky yet more fun.

    On my truck I am running Goodyear Duratracs which so far havent let me down.
    All very good advice from you guys so far tho
     
  6. Jul 11, 2011 at 8:49 AM
    #6
    David K

    David K Well-Known Member

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    Most deep/ dry sand will need deflating... 15 psi is the place to start... If the truck struggles... then drop it to 10. GET a pump before you deflate! $50-$80 for a good one that connects to the battery. They are 3 times faster than the cig. lighter powered ones. (6 psi per minute vs. 2 psi per minute)

    I did mud and snow at street pressure with my new Hankook Dynapro ATm's last Feb. without a problem. I don't do as much mud and snow as others here, however.
     
  7. Jul 12, 2011 at 8:07 PM
    #7
    TacoTaro

    TacoTaro Well-Known Member

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    I run 15psi for most situations. In soft stuff (sand, mud, etc.) I will go 10-12. Dropping psi also makes the ride so much better off road. It takes the harshness out of washboard

    I have the MV50. Cost around $50 and its a great compressor for the money. Used it many times and its pretty fast.
     
  8. Jul 12, 2011 at 8:12 PM
    #8
    TacoTaro

    TacoTaro Well-Known Member

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    This one. [​IMG]
     
  9. Jul 12, 2011 at 8:42 PM
    #9
    David K

    David K Well-Known Member

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    Looks like one I have too... Tsunami MV50, recent addition. I also have the Harbor Frieght unit 'General Pneumatic'... it is a bit faster, but the wire gets very hot and melts fuses!
     
  10. Oct 8, 2011 at 9:59 AM
    #10
    David K

    David K Well-Known Member

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