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Thread: lightweight wheels for a 944 IT car?

  1. #1
    Join Date
    Aug 2007
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    1

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    Hey All,

    What is the best options for lightweight 15x7 wheels for a late offset (52 mm) 944 IT car? I cannot find any.

    Cheers,
    Henry

  2. #2
    Join Date
    Aug 2005
    Posts
    55

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    I have seen at least 1 or 2 late 944 that have used 15x7 early offset wheels(23mm). The tires just fit under the fenders if you had enough camber. This might give you more options. I am not sure what the IT rules are for track width, but i would be just about 2" total width increase.
    Joe P.
    Porsche 944 Racer

  3. #3
    Join Date
    Jan 2001
    Location
    Buffalo, New York
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    2,942

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    The only "track" rule in IT is that it has to fit inside the fender's wheel well.

  4. #4
    Join Date
    Aug 2003
    Location
    Hendersonville, NC
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    174

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    you can get late offset phone dials, but better idea is to retrofit an early suspension to your car - because of the hibs, the whole deal is lighter and you can use cookie cutters...

    BTW phone dials suffer from the bends - i.e. they are soft...
    timo

  5. #5
    Join Date
    Sep 2002
    Location
    Ithaca, NY
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    65

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    I disagree with Timo. I raced for MANY years in a 944 with the phone dials, and the only problems I had with them were caused by the driver doing something stupid.

    The later suspension is better from a geometric standpoint - less camber change (that's one of the reasons it was reengineered).
    Chris Camadella
    ITS Porsche 944

  6. #6
    Join Date
    Jan 2001
    Location
    Royal Oak, MI, USA
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    1,599

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    I disagree with Timo. I raced for MANY years in a 944 with the phone dials, and the only problems I had with them were caused by the driver doing something stupid.

    The later suspension is better from a geometric standpoint - less camber change (that's one of the reasons it was reengineered).
    [/b]
    I've bent a bunch of phonies... yeah, always as a result of an impact!

    VERY interesting about the suspension design - always though it was due to the desire for lighter unsprung weight...

    Ah, well, camber change becomes negligible if your spring/t-bar rates are high enough!

    Vaughan Scott
    Detroit Region #280052
    '79 924 #77 ITB
    #65 Hidari Firefly P2
    www.vaughanscott.com

  7. #7
    Join Date
    Aug 2003
    Location
    Hendersonville, NC
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    174

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    I thought the suspension was redesigned to account for the additional space needed for ABS? Unless you mean the 85 redesign?

    timo

  8. #8
    Join Date
    Jan 2001
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    Royal Oak, MI, USA
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    IIRC '85.5 was when the aluminum stuff came into play, which was what I thought Chris was talking about.

    Though there is an added question - is the geometry improvement for the front or rear (or both?) suspension? Wondering where that puts the 924S, since it has the old steel front a-arms, but the new aluminum rear trailing arms...
    Vaughan Scott
    Detroit Region #280052
    '79 924 #77 ITB
    #65 Hidari Firefly P2
    www.vaughanscott.com

  9. #9
    Join Date
    Nov 2004
    Location
    statesville, NC USA
    Posts
    167

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    The 85.5 (and 86?) front control arms were aluminum, but they are the same length as the early steel. The latest aluminum ones ('87 thru 968) were longer and thus have a different offset wheel requirement. The wheel moves in a bigger arc with the longer control arm and screws up the camber a little less. The aluminum rear conrol arms don't get this benefit, but they may be more rigid.
    1984 Porsche 944 ITS #54

  10. #10
    Join Date
    Jan 2001
    Location
    Royal Oak, MI, USA
    Posts
    1,599

    Default

    Makes sense, thanks for the clarification.

    I wouldn't be surprised if the rear arms are more rigid; they heavily boxed the rear arms on the factory race cars to the extent that you can hardly see any of the stock parts.

    Vaughan Scott
    Detroit Region #280052
    '79 924 #77 ITB
    #65 Hidari Firefly P2
    www.vaughanscott.com

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