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*did a Search* 39.5 air pressure

Discussion in 'The Garage' started by denver75k5, Nov 21, 2003.

  1. denver75k5

    denver75k5 1/2 ton status

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    What do you run yous at???
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I run mine at 23 front and 21 rear. They're on 15x10's, full bodies truck with a 6.2, dual batt's and a 10,000 lb winch up front.

    I've checked the pressure after a 10 mile freeway run before they could cool down any and they'd only gained about 2 lbs or roughly 10%.

    Rene
     
  3. denver75k5

    denver75k5 1/2 ton status

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    Cool Thanks , /forums/images/graemlins/thumb.gif That gives me some Idea of what I should run ,(Ihave no Idea what my rig weighs) but I do know 30lbs is way too much for the road..
     
  4. Silver84k5

    Silver84k5 1/2 ton status

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    im runnin swampers in the front and boggers in the rear. im running 20 in the front and 15 in the rear. with 10 inch rims the boggers need to run a little less so im not running on the just the middle of the tread so much... Even with 15 pounds all of the lug doesnt touch....
     
  5. Mudzer

    Mudzer 1/2 ton status Author

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    I run my 39.5" IROKs at 18psi on the street and 5 on the trail! /forums/images/graemlins/thumb.gif
     
  6. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I've got my 38.5s at 25 psi.
     
  7. zakk

    zakk 1/2 ton status

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    17 front 16 rear

    contact patch is good.
     
  8. i_4x4

    i_4x4 1/2 ton status

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    The way I find weight vs.tire pressure. Take some Chalk go all the way accross the tread, drive about 3-4 rev's. Check contact patch. Add or Subtract from there. Chalk gone in the middle to much, gone on the out side to little. Hope this helps.
     
  9. willyswanter

    willyswanter 1/2 ton status GMOTM Winner

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    45 front 50 rear

    Seriously

    No, I'm serious!

    D00d, why would I lie?

    Ok, they are the E rated 39.5's and I tow alot and well my truck weighs 9k pounds. Recomended pressure for the truck is 65... They get hot if I run anything less than 30.
     
  10. denver75k5

    denver75k5 1/2 ton status

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    Thanks guys , I think I mite give that chalk line thing a try.
     

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