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  1. Join Date
    Mar 2008
    Posts
    37,959
    #81
    Quote Originally Posted by Lew_Alcindor View Post
    Mukang may umabsent sa HS chem class? That is basic gas law. Guy Lussac Law. Pressure increases as temperature increase assuming same volume (tires can expand but only up to a certain point).

    If you have TPMS, you would havfe observed that already. With ordinary air, I observe as much as 5psi increase from my garage to SLEX running at speed limit. With nitrogen, the increase is only around 2psi.
    it takes extra effort to keep looking awake during the 1 pm chemistry lecture.

    car manufacturers and tire manufacturers already put into the equation, the expected air expansion when the tire heats up with use, and air contraction during the cool-down period. we but have to follow the prescribed psi.
    Last edited by dr. d; March 10th, 2020 at 10:51 AM.

  2. Join Date
    Jan 2009
    Posts
    4,927
    #82
    ^ I agree on this.

    The recommended pressure on the door jamb already takes into consideration that the mass of car owners will just be using regular air to pressurize their tires. That also means that air expansion has also been factored in. If this is not the case, you would be seeing an alarming cases of tires exploding on the road.

    Contrary to popular belief, tires are less likely to explode when slightly over-inflated. A tire's structural integrity relies on the air pressure inside it. Under-inflated tires will cause excessive flexing and stress that will eventually lead to overheating. In which case, this will cause the tire to disintegrate while in operation... sometimes catastrophically.

  3. Join Date
    May 2017
    Posts
    623
    #83
    Quote Originally Posted by dr. d View Post
    it takes extra effort to keep looking awake during the 1 pm chemistry lecture.

    car manufacturers and tire manufacturers already put into the equation, the expected air expansion when the tire heats up with use, and air contraction during the cool-down period. we but have to follow the prescribed psi.

    kaya mas gusto na namin yung mga tire manufacturers coming from Indonesia and Thailand kaysa sa China. At least it is already in their experience what is happening on their products right before their eyes especially during summer

  4. Join Date
    May 2017
    Posts
    623
    #84
    Quote Originally Posted by Lew_Alcindor View Post
    Mukang may umabsent sa HS chem class? That is basic gas law. Guy Lussac Law. Pressure increases as temperature increase assuming same volume (tires can expand but only up to a certain point).
    Sorry sir, wala na talaga ako matandaan sa Chemistry class ko... lol

  5. Join Date
    May 2017
    Posts
    623
    #85
    Quote Originally Posted by ninjababez View Post
    pagover inflated ang tires suspension masira.

    Sir can you please explain more, I want to learn bakit nakakasira sa suspension ang overinflated tires thank you!

  6. Join Date
    May 2014
    Posts
    13,406
    #86
    Quote Originally Posted by Athrunzala View Post
    Sir can you please explain more, I want to learn bakit nakakasira sa suspension ang overinflated tires thank you!


    eto nalang bro

    What Happens if I Overinflate My Tires? overinflation tir...

    When the tire is overly-inflated the sidewalls become harder, and instead of absorbing the road bumps and shocks, they are transferred straight through to the vehicleís suspension. This can result in a harsher ride, as well as increased road noise from the tires. In severe cases, when dealing with older or severely overinflated tires, the tireís sidewall may even be put at risk to blowing out due to the increased pressure.

  7. Join Date
    May 2017
    Posts
    623
    #87
    Quote Originally Posted by ninjababez View Post

    Thanks ninjababez!

    So harder tires transfer additional stress of hitting road bumps more often to the suspension, aside from having a bouncy road travel.
    During floods and rainy season din pala, not advisable to have overinflated tires as there would be less grip with the ground.

  8. Join Date
    Oct 2012
    Posts
    25,927
    #88
    Quote Originally Posted by Athrunzala View Post
    Thanks ninjababez!

    So harder tires transfer additional stress of hitting road bumps more often to the suspension, aside from having a bouncy road travel.
    During floods and rainy season din pala, not advisable to have overinflated tires as there would be less grip with the ground.
    These are cases where the over inflation is tooooo much. going over 2-4 psi shouldn't be adverse.

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