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. ;-)
I like to play with new toys. :-)
Mike Lowe mikelowe@pointecom.net http://www.pointecom.net/~mikelowe
'96 Miata R (Go go gerbil power!)
'94 Miata FM2 Turbo (Gerbils on crack!)
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