Miata Mailing List: November 1999, Message #173

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From: Craig Boyle <craig_boyle@yahoo.com>
Subject:Re: Spike's Detail and a little Autocross.. (was Re: Total and
Date: Wed, 3 Nov 1999 13:20:12 -0500


42psi seems like a good number to me. It was the
answer to everything Scott Adams' Hitchhikers Guide to
the Galaxy and it's the menu-number of my favorite
dish in my favorite Chinese restaurant. Sometimes you
just have to let the force be with you. So 42 psi it
is. 

Craig

--- Scot Zediker <mx5_1991@yahoo.com> wrote:
> 
> 
> --- M97C94B90@aol.com wrote:
> > In a message dated 11/2/99 8:22:06 PM Eastern
> > Standard Time, 
> > craig_boyle@yahoo.com writes:
> > 
> > << Try 42psi in the Kumho's (195/55 14)
> >  
> >  Craig >>
> > 
> > Why so high on the Kuhmo's Craig?  I know they're
> > soft...have seen some run 
> > at an autox though never run them myself.  Are
> they
> > really that soft?  Afraid 
> > of rollover?  I run 30 psi on my street tires
> (Toyos
> > T-1S) and ran 32 psi on 
> > the Potenzas.  Grip seemed to decrease as the
> > pressure went up on the street 
> > rubber.  I realize that the Kuhmos are super
> sticky
> > but doesn't that much 
> > increased pressure decrease the grip factor a bit?
> 
> > Again, just curious as 
> > I've never run them myself.
> 
> I ran 40 psi my first time out on Kumhos.  Although
> I
> did have a lot more grip than with my street tires
> with that pressure, the car felt very skittish out
> on
> course.  For the next run I dropped to 36 psi and
> noticed a HUGE improvement in how the car felt.
> 
> Of course I drive a '91, which is lighter than a '95
> or '97, and maybe Craig just drives a helluva lot
> harder than I do (it's possible; I have run against
> him on quite a few occasions).  But a couple of
> people
> have told me that Kumhos have a fairly wide
> "optimum"
> range of pressures.  Any of the pressures mentioned
> above would make a good starting point, and then you
> can decide what works better from there.
> 
> Scot & Kate
> '91 base, Silverstone Metallic
> 
> =====
> 
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=====

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