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Air down

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by badfish4tail, Jul 29, 2005.

  1. badfish4tail

    badfish4tail 1/2 ton status

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    I know this question might sound silly to some of you old timers but i got to ask....What is the PSI i should have when i air down before hitting the trail.
    I have 35/14.5x15 boggers on 15x10 rock krawler rims...Thanks
     
  2. Roz

    Roz 1/2 ton status

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    im in the dirt alot so i run about 18-20. sand and rock crawling i see people run down 8psi. matter of ure driving style and terrain. maybe others have more input but seems like no other opinions have been offered. start playing around while u wheel to see what u like.

    btw, i have 35" 15.5x 10 bf mt's
     
  3. Thunder

    Thunder 3/4 ton status

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    With my 12.50 33 MTs I usually air down to 15-20 lbs for rocks and soft stuff.
    I go down around 12 PSI for snow wheeling. Thats about as low as I would want to go and not worry about poping a bead.
     
  4. mxfireman

    mxfireman 1/2 ton status

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    13 psi is what I run out here in the rocks.
     
  5. badfish4tail

    badfish4tail 1/2 ton status

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    thanks for the info...think i will start out about 20 psi
     
  6. blazinzuk

    blazinzuk Buzzbox voodoo Premium Member GMOTM Winner

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    With smaller tires you can't go as low as with bigger tires because you still need ground clearance but with some 36s I had I would go down to 5 on the snow 8-10 on the rocks and sand and 15-20 for mud if you are going to go down to the levels where you could possibly pop a bead you may want to figure out a way to reseat it beforehand I use the starting fluid and match trick has always worked for me but it might be best to go get a junk tire and practice
     
  7. Jonny-K5

    Jonny-K5 1/2 ton status

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    bias swampers can go pretty low without losing much ground clearance.the thicker sidewalls can hold up the truck alot better than radials. i run my 33" tsl's around 10psi on the trail and they barely bulge.

    radials usually cant take low pressure like a bias can. my radial A/T's look flat at 18 psi.

    i would start at 15psi and keep going lower till you have problems. 8-10psi would probly be perfect.
     
  8. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I've run my old worn 36" TSL's as low as 6 psi in the sand. Even then there was not much buldge in the sidewall and I never lost a bead.

    Bias Swampers will easily tolerate single digits.

    Rene
     
  9. short sub

    short sub Registered Member

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    i just started running boggers a few months back and they are STIFF. on my rig i run 11 psi front and 8 rear and they still dont bulge unless up against a rock or other obstacle. when running the tsls i couldnt air down as much, but i think u can try wheeling at around 10 psi for sure-play with it and see what ya like the best Later Ryan
     
  10. TruckNutzDude

    TruckNutzDude 1/2 ton status

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    Are you running 15" rims? I've been nervous to air down more than 15psi front and rear since I lost a bead on my old 38's. I currently have 44x18.5 swampers on 16.5x12 wheels. I'm just nervous about losing a bead while I'm sideways on an obstacle, I'd really hate to flop it and hurt anyone in the truck (sheet metal is repairable).
     

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