[BiturboS4] Wheel time

john sonty erhti at yahoo.com
Thu Mar 13 07:39:12 EST 2003

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
> other
> 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.
> Carter.
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