wheel spacers

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2017/06/16 08:52:34 (permalink)

wheel spacers

hi im changing my wheels on my cayman s 3.4 2006 from 18 inch to 17 inch but they it the calippers can anybody tell me what size spacer to use

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    MrDemon
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    MrDemon PCGB Member
    Re: wheel spacers 2017/06/16 09:53:10 (permalink)
    impossible to answer  that sorry to say.
     
    Not sure I would want to run 17" on a 3.4 myself, 18 is a great size/performance for the gen 1 car.
     
    if the calipers hit the rim then spacers won't help you.
     
    if they hit the spokes when the wheels size has nothing to do with it.

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    Buddy
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    Buddy PCGB Member
    Re: wheel spacers 2017/07/14 10:22:52 (permalink)
    I know that some carry a spacesaver spare wheel of 17" diameter but as for spacers I'm unsure since the spare wheels are of different width and offset to the standard wheels either 18 or 19" in fact very narrow so may clear the calliper only due to this, I know that some racers use smaller wheels.
     
    The Spare wheel used in an earlier article on the technical articles section was a 185/60/17 spacesaver tyre on a 987 Cayman, I couldn't find if it was a Cayman S which has the larger brakes but the wheel used had a 996 part number.
     
    post edited by Buddy - 2017/07/14 11:04:39

    Kevan
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    Kieron
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    Kieron Guest of the Club
    Re: wheel spacers 2017/07/18 14:44:06 (permalink)
    I'm thinking of fitting 235 x45 x17 instead of 235 x50x17 on the rear. I 've worked out that the speedo will over read by about 2mph at 70mph, but are there any fitting or body/suspension clearance issues?
    Buddy
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    Buddy PCGB Member
    Re: wheel spacers 2017/07/23 23:13:43 (permalink)
    Since the change according to the measurements you give only effect the diameter there will be no issues, in the figures the width and wheel diameter are identical and only the aspect ratio is effected.
     
    Probability is that given that Speedo's are normally calibrated to slightly fast by 2-3 mph then at first the reading will be expected to be accurate but this will later read slower due to wear and so you should expect that the speedo will be more inaccurate later, take greater care regarding your speed, for track work it does give some advantages due to the lower sidewalls, the lower gearing gives slightly improved acceleration etc
     
    post edited by Buddy - 2017/07/23 23:27:55

    Kevan
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    Cayman S Gen2 PDK Amethyst Metallic
    Location South Derbyshire
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