Automotive Tools

This is a collection of tools and calculators that I've either contributed to or created myself.  Click on the section title to go to the actual tool.  Unless specified, all tools and calculators are Copyright Mark Juric.

Tire Size Calculator

This little tool will allow you to to calculate the height of your tire sidewall based on the aspect ratio and width of your tire. This information is usually printed on the side of your tire. Optionally, given the height of your wheel, this form will also calculate the overall height of your tire.

Cam Timing vs. Compression

This is actually a spreadsheet based on Jeffrey Diamond's technical discussion of Cam Timing vs. Compression at http://victorylibrary.com/mopar/cam-tech-c.htm

Top Speed Calculator

This is a tool for calculating your theoretical top speed based on engine RPMs, transmission final ratio, rear end gear ratio, and tire size.

Transmision Speedometer Gear Calculator

This tool is for calculating which Mopar transmission speedometer gear you'll need based on your rear end ratio and tire size.