Tire Pressure

Discussion in 'Renegade Wheels & Tires' started by Jimmy C, Mar 16, 2018.

  1. Jimmy C

    Jimmy C New Member

    Joined:
    Mar 16, 2018
    Messages:
    13
    Location:
    North Carolina
    I have a new Trailhawk with factory tires. I drive about 50% on mostly graded rock roads and 50% on pavement, never exceed 65 mph. I would like to minimize my tire pressure to smooth out the rock roads. Door placard says 35 PSI. If I read the tire chart right the tires should carry the load at 25 PSI at up to 100 MPH.

    Like everybody else, mine was delivered with 40+ PSI. I am down to 34 PSI and hoping to get down to about 30.

    I am wondering if anybody else out there is experimenting with lower pressure for slow driving on rough roads.

    If so what have you learned? Any idea when the tire monitor goes off?

    The only rough stuff I drive on is where the rock roads are washed out after a big rain storm.
     
  2. Dgr401

    Dgr401 Well-Known Member

    Joined:
    Nov 21, 2015
    Messages:
    569
    Location:
    Rhode Island, USA
    The low psi tire warning will appear at approximately 30 psi. I had the warning come on and it displays a one time warning message for each tire that is affected by low psi each time the Jeep is started until the pressure goes above the threshold for low psi. The orange low pressure warning light on the dash will remain on all the time until the pressure is corrected.

    Would the normal pressure be better for the gravel road? With lower pressure I would be concerned that your sidewall will be more exposed to the rocks than with a higher pressure.
     
  3. Jimmy C

    Jimmy C New Member

    Joined:
    Mar 16, 2018
    Messages:
    13
    Location:
    North Carolina
    Thanks for the info. My past experience is that the lower pressure rides smoother. I have never had problems damaging sidewalls in the past. The traction on hard top gets worse and the tires overheat if you go too fast. I once drove mud between the tire bead and the wheel, but that was an unusual situation.

    On one of my trucks, the one I use for off-roading, I run 24 psi on road at 12 off-road with no problem. The tires are oversized and the truck maxes out at 60. The vehicle I replaced I ran about 5 psi less than the door placard for years with no problems.

    I am worried about confusing all the computers tied into ABS, stability control, etc., overheating, and squirrelly handling.
     

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