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360 Modena Tire Pressure

Discussion in 'Technical Q&A' started by ZINGARA 250GTL, Apr 16, 2005.

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  1. ZINGARA 250GTL

    ZINGARA 250GTL F1 World Champ
    Owner

    Jun 21, 2002
    17,499
    PA
    Full Name:
    Ken
    #1 ZINGARA 250GTL, Apr 16, 2005
    I have an '01 360 F1 which I bought from Algar a year ago. It has 6,700 trouble free miles on it and I am a maintenance freak. I check my tire pressure weekly when I drive the car. I have noticed that I must add air every other week. All four tires lose around 5-6 psi. uniformly. Algar cannot give me a reason for this. Most of my driving is done by carefully allowing the car to warm for about six miles or so and then going out on the highway and doing about 30 miles at speeds between 80-140 mph. I then drive another six miles or so for cooling off and put the car to bed. Any ideas?
     
  2. 4i2fly

    4i2fly Formula 3

    Apr 16, 2004
    1,333
    SF, Bay Area
    #2 4i2fly, Apr 16, 2005
    It's odd that all 4 tires need 5 - 6 lb of air... do you remember if you measure the pressure when tires are cold? If not depending on the type of driving the pressure in each tire will be significantly different when hot vs. cold.
    The other issue maybe if you happen to have modulars?
     
  3. frefan

    frefan F1 Veteran

    Apr 21, 2004
    7,370
    #3 frefan, Apr 16, 2005
    Do you have those valve stemp caps that show your tire pressure, or turn red when pressure is low, anything like that? They are notorious for leaking.
     
  4. GTO84

    GTO84 Formula Junior

    Dec 13, 2003
    566
    #4 GTO84, Apr 16, 2005
    Do you have some kind of aftermarket rims? Like 3 peice?
     
  5. ZINGARA 250GTL

    ZINGARA 250GTL F1 World Champ
    Owner

    Jun 21, 2002
    17,499
    PA
    Full Name:
    Ken
    #5 ZINGARA 250GTL, May 11, 2005
    thanks but, my car is totally stock and pressure is checked cold. Stems are also stock. I'm stumped.
     
  6. Kram

    Kram Formula Junior

    Jul 3, 2004
    867
    Park bench, Canada
    Full Name:
    Mark
    #6 Kram, May 11, 2005
    Perhaps they are a bad set of tires! They all have a high area and a low volume, so there is lots of rubber wall for the air to slowly slip through. On my 360 there is one tire that leaks the same amount (three piece rim however), a rear. I put it down to low volume production techniques, sort of like a racing tire, and they all leak like mad.
     
  7. teak360

    teak360 F1 World Champ

    Nov 3, 2003
    10,065
    Boulder, CO
    Full Name:
    Scott
    #7 teak360, May 12, 2005
    Do the fronts seem to lose the same as the rears or a little less? The volume of the rear tires is about 30 percent greater than the fronts.
     

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