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Thread: Lightweight vs heavy wheels

  1. #11
    Club Supporter hammerhead's Avatar
    Join Date
    Jun 2018
    Location
    Melancthon,Ontario, Canada
    Posts
    2,725
    weight savings with unsprung weight - drive shafts - light flywheels - windage trays - and anything that creates drag - is marginal, maybe 5-10 hp but do enough of them and you can easily make 50+hp

  2. #12
    stangstevers
    Guest
    I think you guys are talking about mass moment of inertia...

    So a 30" wheel that weighs around 30 pounds is about: 147 lb-ft

    And one that weighs 20 pounds is: 98 lb-ft

    So like around 200 lb-ft total savings I guess. I'm not sure how to translate MMI to HP though... I think this is like saying saving 40 pounds total on your wheels is like saving 200 pounds on the body for acceleration?

  3. #13
    Club Supporter
    Join Date
    Mar 2014
    Location
    Mt Albert
    Posts
    491
    Can’t comment on the street feel, but knocking off 10lbs per corner on my track setup transformed the feel of my car. Car feels more responsive, more willing to go where I want it to.

  4. #14
    Mrods
    Guest
    This was an interesting and objective test by Brenspeed. Shows a 5% gain with lighter wheels.

    https://youtu.be/5MUnG5hrEEI

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