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Tyre pressure on BMW 3 series 320d

  • 30-05-2023 12:52pm
    #1
    Kealyboy
    Registered Users, Registered Users 2 Posts: 361 ✭✭


    Hi I recently bought a 2017 BMW 3 series 320d.

    image.jpg

    Just wondering what is the tyre pressure for the tyre on this car front tyres are: 245/35R19 93W back tyres are: 275/30ZR19 96W

    image.jpg




Comments

  • #2
    xabi
    Registered Users, Registered Users 2 Posts: 3,020 ✭✭✭xabi


    Check the plate inside the door



  • #3
    Kealyboy
    Registered Users, Registered Users 2 Posts: 361 ✭✭Kealyboy


    Tyre size not on that data plate unfortunately



  • #4
    Kealyboy
    Registered Users, Registered Users 2 Posts: 361 ✭✭Kealyboy


    https://www.boards.ie/discussion/2058298498/tyre-pressure-on-bmw-3-series-320d

    I think they should be 39 psi but I’m not too sure. Any help thanks



  • #5
    jadatis
    Registered Users, Registered Users 2 Posts: 9 ✭jadatis


    I can make a pressure/axleloadcapacity list for both your tyres. With maximum reserve, but still acceptable comfort and gripp.

    In theory, you then can drive 160kmph/99mph constant without overheating any part of tyre, wich is main goal of pressure determination.

    But first need to know if you want KG or LBS, and if needed for higher speed. And if you want psi or bar.

    Already checked by searching, tyres to be XL/ reinforced/extraload. Most low aspect ratio tires and ZR are ( the 30 and 35 in your sises)

    Front Loadindex 93/ maxload 650kg/1433lbs AT 2.9 bar/42psi upto 160kmph/99mph

    Rear LI 96/ maxload 710 kg/ 1565 lbs AT 2.9 bar/42psi upto 160kmph/99 mph


    Then you "ONLY" need to to determine the axleloads in your use 99% acurate, the most tricky part in it all, and your responcibility, and look them back in my made list.

    The carmakers nowadays only use MPAW's and max technical carspeed for the recomended pressure.

    Or they dont calculate at all but yust give AT-pressure of tire ( the 42 psi for XL//, and 36psi for standard load)



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