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Old 09-17-2014, 05:00 PM   #9 (permalink)
Waiz
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It's tough to really get concrete info but in my experience if you maintain at least 1% to 3% you won't run into issues

The .5" to 1" guidance is what we have been suggesting to people for years on my350z without issue

I also use this tire calculator whenever I am asked too:

http://www.miata.net/garage/tirecalc.html

Last edited by Waiz; 09-17-2014 at 06:30 PM.
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