How does air pressure work in Phoenix

  • On-line

    Hi Christian,
    Of course you can ask. 235-75 R17.5. 132/130
    Since I neglected the weighing after the recharge, I can only estimate that with 460 liters of water and 125 liters of gas, I drive well over 8T
    And that drives wonderfully, even if there are still 2 T trailers.

    Greeting
    Achim

    Travel is life - as life is travel. (Jean Paul)

    Phoenix top alcove 8300 RSLX with MAN

  • Hello Achim,

    what tire size do you have on the MAN?
    As I have read you have increased the weight to 8.8t and may one ask how much the MAN weighs ready to travel?

    Greetings Christian

    Do not dream your life, live your dream. - Tommaso Campanella


    A 8800 BMRSLX on MAN 10.250 (Euro 6c) EZ 2017

  • On-line

    Hello everybody,
    At the MAN I always had 7.0 at the front. On the advice of my tire dealer, I have now increased this to 7.3. At the VA, my vehicle weighs between 3.8 and 3.9 t, depending on the load.
    On the rear axle I drive 5.6 with a full load.
    Greeting
    Achim

    Travel is life - as life is travel. (Jean Paul)

    Phoenix top alcove 8300 RSLX with MAN

  • Hello everybody,
    We were always given the maximum pressure according to the tire imprint.
    It was correspondingly tough.
    Now recalculated, also with the help of the table, and the DB workshop also did some calculations.
    Instead of 5 bar, the pressure has now been adjusted to the weight and reduced to 4.2 bar on all 6 tires.
    The tires "stand up" better and the driving experience is considerably better when it comes to rumbling stretches.
    Greetings from southern Norway in the rain!

    Best regards

    Eugene

    __________________________________________________________________
    If you point one finger at someone, 3 fingers point at you!

    PhoeniX 7200 RS alcove built 2004 on DB Sprinter 616 automatic, Vanglas window and PV system 480Wp with 200 AH LiFeYPo4 battery, Marquardt shock absorber front and rear

  • Hello Christian and Peter,

    We had a total weight of 7,720 on the front axle 3,570 and drive with 7.0 in front and 5.0 in the rear. That seems to fit very well. Thank you both.

    Best wishes

    Thomas

    MAN 8400 QRSLX 8.800KG Euro 6 from 01/2018

  • Hello Thomas,

    I've just looked through my data again and attached is the air pressure table from Coniti, which I always use for orientation.
    I drive the following pressures with the weighted axle loads with 265 / 70R tires.

    VA approx. 7.8-8.0 bar at approx. 4.0 - 4.7t
    HA 5.0 bar at approx. 4.5-5.0t

    Oh yes, the vehicle is a 10th with 8.11t empty weight with all fillers (water 480l and gas bottles) Travel weight is between 8.9 and 9.3t ready to drive.
    According to Conti, the twin tires should always be filled with a pressure of at least 5.0 bar, even if the payload is lower according to the table.
    If I go below 7.8 bar at the front, it becomes very "spongy" in the corners ...

    New + empty with water 480l, and 2x 11kg gas bottles + 180l tank full I had VA 3930 kg and HA 4190 kg = total 8120 kg.

    Greeting

    Christian
    Conti_Luftdrucktabelle_de_2017_01.pdf

    Greetings Christian

    Do not dream your life, live your dream. - Tommaso Campanella


    A 8800 BMRSLX on MAN 10.250 (Euro 6c) EZ 2017

  • Hello Thomas,

    I had originally noted for 5.8 / 6.8 - back / front.
    My workshop increased it by 0.3-0.4 bar on the last visit so that "the tires wear off more evenly".
    Tire size 225/75 R 17.5 129/127 M.
    In the end I remember 6.0 at the back and 7.0 at the front and then it has to be good.
    Incidentally, I drive Michelin winter tires all year round and have had good experiences after 3.5 years and around 40,000 km.

    Many greetings from the Black Forest
    Peter

    Love is not about holding hands when all is well, it is about not letting go when things get difficult.

  • Hello to all MAN or EC drivers,

    I am trying to determine the best air pressure.
    On our vehicle with 7,490 KG gross vehicle weight, 235 / 75R17.5 with load index 130/132 are mounted at the front and rear. At the rear, of course, as twin tires.
    According to COC papers, the maximum axle load is 4,000 kg at the front and 5,600 kg at the rear. Of course we are traveling with less total weight.

    According to the air pressure tables, the maximum load would be 7.25 bar for the front and 5.3 bar somewhere for the rear.

    What air pressure do you drive?

    best regards
    Thomas

    MAN 8400 QRSLX 8.800KG Euro 6 from 01/2018