Re: Roll stiffness and cornering

[DeWitt Harrison <de@aztek.com>]

On Mon, 19 May 1997 12:35:47 -0600, Jeffrey Goggin writes:

>However, I find it hard to believe that Audi would lower their car by nearly
>3/4" -- which is effectively what they did when they switched from 205/60-15
>to 215/50-15 tires -- without also making changes to the suspension geometry
>to accomodate this. 

As a minor digression from the main thread, I am curious why the
use of shorter tires would have any bearing on the suspension
geometry.  On the face of it, a shorter tire just brings the road a
bit closer to the car's CG without changing any of the geometric or
dynamic relationships. It would be easier to understand spring
changes to compensate for the resulting increase in ride harshness
or other minor side effect of running short tires.

DeWitt  de@aztek.com
Boulder, CO
88 5kcstq