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Tire Pressures

Discussion in 'Car Hauler and Auto Carrier Trucking Forum' started by nascarchuck, Feb 22, 2013.

Page 1 of 3
  1. Feb 22, 2013 #1
    nascarchuck

    nascarchuck Road Train Member

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    DFW, TX
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    Im in a new Peterbilt 587 with a 5th wheel 4 car trailer, not a stinger setup.

    I have always been a firm believer in going by the data plate inside the door jamb for air pressures on tires where most folks just put the maximum pressure thats listed on the side of the tire. That being said, I normally run 100psi in big ol truck tires.

    As normal I was running 100 PSI in my steers when the boss was doing an audit on the truck last week. She called me yesterday and said that she talked to our maintenance guy and 3 drivers and they all told her that my steers should have 130 PSI. I told her that I disagree with that but will comply and do my own research. After thinking about it I have a feeling that the maint guy and the drivers forgot that Im not in a stinger with an overhead rack. Im sure those guys run different tires and air pressures.

    Anyway, does 130 sound like its too much? I run mostly Texas and I dont have to tell y'all that it gets really hot here and I dont want to over inflate the steers and blow a tire during the summer.

    BTW, the data plate doesnt have this size listed so I cant go by that.

    The steer tires are Bridgestone R250 ED 275/70R 22.5

    Thanks...
     
    nascarchuck, Feb 22, 2013
    nascarchuck, Feb 22, 2013
    #1
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  3. Feb 22, 2013 #2
    Ruthless

    Ruthless Road Train Member

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    Always go by what the sidewall of the tire says. The data plate goes by what tire they suggest you use when the truck was new. Tires change: pressure required is different on sizes/applications/brands.
     
    Last edited: Feb 22, 2013
    Ruthless, Feb 22, 2013
    Ruthless, Feb 22, 2013
    #2
    Real Deal Thanks this.
  4. Feb 22, 2013 #3
    losttrucker

    losttrucker Road Train Member

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    I dont agree on that!! The pressure on the sidewall is the MAX pressure!! When reading the data plate it doesnt say Goodyear HL720 110psi, it just says recommended pressure 110psi.
     
    losttrucker, Feb 22, 2013
    losttrucker, Feb 22, 2013
    #3
    ramblingman Thanks this.
  5. Feb 22, 2013 #4
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    the road less travelled
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    I'd suggest having the shop ask the Bridgestone rep about it, you aren't running that much weight without the roof rack.
     
    25(2)+2, Feb 22, 2013
    25(2)+2, Feb 22, 2013
    #4
  7. Feb 23, 2013 #5
    WRIGHTRACING

    WRIGHTRACING Heavy Load Member

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    Iuka MS/Muscle Shoals AL
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    WRIGHTRACING, Feb 23, 2013
    WRIGHTRACING, Feb 23, 2013
    #5
    Ruthless Thanks this.
  8. Feb 23, 2013 #6
    nascarchuck

    nascarchuck Road Train Member

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    Sep 2, 2008
    DFW, TX
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    I disagree as well. I had an old VW bug and it drove like crap. All over the road. It has 35 PSI as was stamped on the tire.
    Someone told me to adjust the psi to the data plate (something like 18 front, 25 rear) and after that it drove great.

    As was stated, what's stamped on the tire is the MAXIMUM.
     
    nascarchuck, Feb 23, 2013
    nascarchuck, Feb 23, 2013
    #6
  9. Feb 23, 2013 #7
    Real Deal

    Real Deal Medium Load Member

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    May 29, 2012
    Saint George UT
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    I definitely dont agree with this. You could put 10 psi in all tires and it would ride great. But it is the wrong thing to do. Read the sidewall like the man said. If it says 6620 lbs at 120 psi put 120 psi in it.
     
    Real Deal, Feb 23, 2013
    Real Deal, Feb 23, 2013
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    Ruthless Thanks this.
  10. Feb 23, 2013 #8
    Ruthless

    Ruthless Road Train Member

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    Matter of fact: 1.) go ask a tire shop. 2.) ask them to explain why you're wrong after they tell you what I did.
     
    Ruthless, Feb 23, 2013
    Ruthless, Feb 23, 2013
    #8
    ramblingman Thanks this.
  11. Feb 23, 2013 #9
    WRIGHTRACING

    WRIGHTRACING Heavy Load Member

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    Jan 3, 2011
    Iuka MS/Muscle Shoals AL
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    The maximum on the sidewall is for max weight limit on the tire. If you're only hauling half the weight limit of the tire, then you don't need 120 lbs. in there.

    If you've ever seen the inside of a tire after they get hot from being run low and start deteriorating...you'd make sure you have the right amount in them. Run to much in them and you'll just wear them out faster as well. Tire pressure is based on weight. I don't get out and change tire pressures per load, but I keep them where my general load weight is every load.

    I posted the link up above for what the tire manufacturer recommends. I would think they're pretty knowledgeable of what is best.
     
    WRIGHTRACING, Feb 23, 2013
    WRIGHTRACING, Feb 23, 2013
    #9
  12. Feb 23, 2013 #10
    Real Deal

    Real Deal Medium Load Member

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    Saint George UT
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    If you run around at 40000 lbs all the time sould you only run 60 psi in your tires ?
     
    Real Deal, Feb 23, 2013
    Real Deal, Feb 23, 2013
    #10
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