Zoltan,

All your answers are a click away...
http://www.miata.net/garage/tirecalc.html

Jack

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Zoltan
Sent: Friday, March 23, 2007 5:20 PM
To: vanagon@GERRY.VANAGON.COM
Subject: What size of profile?

It is a "tire question", I know, it sucks.  But I am not certain what is the
right size if profie that has to be used to make the speedometer show
correctly the speed.  Right now, I think, I have a smaller one on that has a
smaller circumference, that makes me go 'faster' to be at the right speed.
Zoltan