Miata Mailing List: March 2000, Message #311

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Previously on Tire/Track Advice, "Jason and Satori" <jgarcia@pacbell.net>
said...


> I agree with Jyri, I've used 500 mile old RE71 on the track.  They lasted
for
> another 8 months, which is longer than I expected.  I do suggest a more
extreme
> alignment if you are going howling the tires at all.  I would
suggest -1.5* to -1*
> front camber, -2* to -1.75* rear camber, relative to the front.  I suggest
this
> because I had some chunking and feathering ( I was sliding around a lot)
and most
> of the excessive wear was on the outside ribs of my tires.  My pressures
were good,
> but even with FM sways my front camber was going positive under extreme
load,
> causing understeer in my case.

That has been my experience too.  I set the camber on 7690 to -1.2 front,
and -1.6 rear.  Of course now I haven't been autocrossing on them, and there
aren't any really fun roads nearby, and so they're running the inside edge
down a bit faster than the rest.

Spike is a different story.  The most negative camber they could get on the
front was -.09.  Maybe it's because of the higher springs of the '95 car, I
don't know.  I told him to give up caster to get camber and he said that's
all he could get.  He seemed to be pretty knowledgeable and tried pretty
hard on it, anybody else out there with a '95 car care to comment on the
maximum camber they've been able to get?

Anyway, the current settings are -0.9 front and -1.5 rear.  That's the best
we could do for now.  If y'all say "that's crap, have it re-done" I will, in
the meantime that's what we've got.

    -John

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John Freas (jfreas@earthlink.net)
Red '90 Base-ish #7690
Louisville, KY
Team LS1,2, SP, the Gap...
Team My Miata girl rocks!
Team dlralt, The M Road, PBC, Roebuck, Team Miata, Voodoo...
Team Collecting clubs: BAMC, BMC, PMC, [CAMS, Sunriders, (historic)]
"I have no idea what those dimple things on the windshield frame are for."
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