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<x-flowed> On Apr 4, 2004, at 9:35 PM, BOB2TYPE3S@aol.com wrote:
Petri wrote:Interesting site, but I always thought that the sidewall percentage was 85% if it wasn't specifically called out (like on our 165/15 stock tires.) I know we have had this discussion before but don't remember the final conclusion. I will have to run out and measure the circumference of one of Sophy's stock tires and back calculate what the percentage is.I also wonder if I can figure out the percentage the diameter has changed
and thus increase the speed (in my head) by that much more:
For example, let's say that from 165-15 to 195/50-15 the diameter decreased
by 3%, thus I can go 3% faster than what the speedo shows and still keep
under or at the speed limit.
Petri, you might want to have a look at this site.
http://www.miata.net/garage/tirecalc.html
You will have to add an 80 in the 165 tire size, meaning you'll have to size
the tire like this, 165-80-15 . This will then allow the system to calculate
the difference. I hope this helps.
Anyone know for sure what the sidewall percentage is?
Later, John Jaranson '66 Square (Sophy) '71 Fasty (Jane - darkside project in waiting) various parts.....don't we all. http://mywebpages.comcast.net/jaransonT3/jaransonT3/ http://mywebpages.comcast.net/jaransonT3/2004Invasion/ http://mywebpages.comcast.net/jaransonT3/notavwclub/
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