[BiturboS4] Wheel time

Michael Kuriger michael at isuzu-mods.com
Thu Mar 13 09:11:34 EST 2003

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I think that the heavier your car is already the less it matters.  but
on my 2000 lb 1/4 mile drag car, I can go almost a second faster in the
1/4 mile with my light racing wheels instead of the bulky stock wheels.


john sonty wrote:

>Some dude on AW did a while back. I don't remember the exact
>numbers but do remember he concluded that the whole 5-10x
>weight-savings thing was a myth.. but again, this was from a
>post on AW so who knows.. ??
>I can't wait til the day I can afford a car that I won't have to
>mod or atleast won't have the desire to..  911tt??  C4??
>--- California Fields <cfields72 at hotmail.com> wrote:
>>[ Converted text/html to text/plain ]
>>Do you guys know if that whole phrase, "Reducing unsprung mass
>>by 1 pound is
>>equivalent to reducing 5 (or 10) pounds of weight in the car,"
>>is really true?
>>I mean, I'm sure we've all heard it tossed around but has
>>anyone ever shown
>>*definitively* (i.e. by experiment or by equations) that this
>>is true? I could
>>have sworn I read somewhere that this weight savings is an
>>exaggeration and
>>that really the ratio is like 1:2 instead of 1:5 or 1:10.  I'm
>>curious how
>>much the unsprung weight actually affects the acceleration and
>>performance aspects of the car...especially since many of us
>>have (or plan) to
>>spend a lot of money towards getting light wheels and tires.
>>If 1 pound
>>unsprung = 1 pound "sprung", then spending $2,500 on
>>tires/wheels to save 50
>>pounds doesn't seem worth it to me.
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