Hey guys, just wanted to share this awesome link . About halfway down the page there is a terrific tire calculator for upsizing or downsizing (WHY???) your wheels/tires. It even gives you the speedometer difference! Cool! Plus lots of education on tires and a tire size calculator.

http://www.chris-longhurst.com/carbi...yre_bible.html


"Use the Forced Induction Luke!"
-Jedi

 

Why downsize? Lowers unsprung weight. Autocrossers do this. 15's and 16's are much preferred over 17's and up. Of course, only while racing, not for street use -- as they sometimes go with significantly smaller diameter tires, too, when on the track.

This one below has been posted several times on this board before: http://www.miata.net/garage/tirecalc.html. It also shows the speedometer difference, but doesn't include all that handy extra information. Thanks for the link!

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

It was Rhetorical man! LMAO
Gotta love us carnuts!


"Use the Forced Induction Luke!"
-Jedi

 

Awesome.. I was wondering what my difference would be... now i konw! .85 mph at 70mph..

..pestilence..