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Re: What I Got For My 13 x 8 Wheels - Tire Pressures

To: "Chris Eckles" <MRoadster@compuserve.com>, <autox@autox.team.net>
Subject: Re: What I Got For My 13 x 8 Wheels - Tire Pressures
From: "David Hedderick" <davebs14@yahoo.com>
Date: Wed, 29 Nov 2000 21:44:43 -0600
I ran about 48-52 in my CS Miata and I STILL had
rollover on the side. Plus the car was quite responsive.

David Hedderick
94 CSP Miata R


----- Original Message -----
From: Chris Eckles <MRoadster@compuserve.com>
To: <autox@autox.team.net>
Sent: Wednesday, November 29, 2000 6:53 AM
Subject: RE: What I Got For My 13 x 8 Wheels - Tire Pressures


> Gee, I was gonna say that those pressures sound really low. . .  <g>
>
> I run 59 front and 53 rear in the Hoosiers on my BMW M Roadster.  The
front
> tires roll over at 57.  Hoosier Tom was amazed when I told him this, but
> when I told him what car I drive, he said that it sounded right.  I have
> recently spoken to several other folks who run high (mid to upper fifties)
> pressure as well.
>
> One very fast CP guy said to ignore rollover, his tires roll to the tops
of
> the H's (Hoosiers, but not autocross tires - slicks?).  My feeling is that
> you should run at least mid forties on the high pressure set (front?), and
> adjust this to remove rollover.
>
> Chris Eckles
> White M Roadster
> Atlanta
>
> >
> Those tire pressures sound really high. On my CSP RX7(~2300 lbs.) I run
the
> 225/45/13 Hoosier Autocross Radials on 13x9 Keizers. I run 27 lbs in front
> and 25 lbs in rear. Of course your numbers are going to be different but
> not
> 20 lbs different. I would start with 30 lbs all around and check for
> sidewall rollover, etc. BTW the 225/45/13 is approximately 1 inch shorter
> than the 225/50/13.
>
>     Jay
>  '79 RX7 CSP
>
>
> -----Original Message-----
> From: owner-autox@autox.team.net [mailto:owner-autox@autox.team.net]On
> Behalf Of mikelowe@pop.pointecom.net
> Sent: Monday, November 27, 2000 3:51 PM
> To: autox@autox.team.net; miata@realbig.com; miatapower@miatapower.net
> Subject: What I Got For My 13 x 8 Wheels
>
>
>      A bunch of you wanted to know which tires I got for my
> new (for me) 13 x 8 Keizer wheels.  I decided to get a set of
> road-race compound Hoosier radials in the 225-50-13 size.
>      It's a compromise in terms of height and compound.  The Hoosier
> Autocrossers in the 225-45-13 size looked very nice.  Maybe I'll try
> them next time.  I just didn't want to destroy a set of autocross
> compound Hoosier radials whle I learned how to use them.  I had a
> friend tear apart a set of those tires after 12 runs.  I also didn't
> want to go too short.  The 225-50s are taller than I expected.
>      I've read the Hoosier care and feeding article at Tirerack.com.
> I'm looking for suggestions for pressures.  If I can't get a
> consensus and I can't decide on my own, I'll go extra high with
> something like 53 psi front and 50 psi rear.  I know those tires like
> lots of air.  I'll use my pyrometer too.
>      I just got the tires mounted this evening.  I'm doing a
> proof-of-fit test tomorrow (I hope).  My street tires are 215-45-15
> Toyo T1Ss so I'm optimistic things will work well with no need to
> go postal on my fenders with a baseball bat.  ;-)
> <


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