Web Tools
http://autowaretech10.net/nextwheels/tire_fac.htm
http://www.miata.net/garage/tirecalc.html
http://www.wheelsmaster.com/rt_specs.jsp
http://www.vehicle-bolt-pattern.com/
http://www.grimmjeeper.com/gears.html
http://www.teammfactory.com/gearcalculator.php
http://www.baffolobill.ru/index.php?option=com_blueprint&task=keylisting&showkey=C
http://www.the-blueprints.com/