WANT TO BUILD OR MODIFY A CAR?
Get the engineering done right
Everything from theory to calculations
Calculator − Simulator 
Theory 
Tire size calculator Find all sizes for a given tire diameter (from any tire notation, 1949 & up) (tutorial) 
Selecting a tire for performance What to look for on the tire sidewall 
Tire friction & rolling coefficients Find an estimate of those coefficients in any situation (tutorial) 
Defining performance The basic limits for performance 
Drag & lift calculator Find the drag & lift coefficients and the frontal area for any vehicle (tutorial) 
Engine theory Everything you need to know on how power is created in an engine 
Weight calculator Estimate the weight of your vehicle (tutorial) 
Direct algebra calculator Find out how to use our online calculator 
Acceleration simulator Find the maximum acceleration for your vehicle (lateral G, 060 mph, ¼mile, 1000 km/h, top speed, etc.) 
Unit conversion Everything you need to know about how to handle units 
Horsepower calculator Estimate the power of your engine (2 & 4stroke, turbo, blower, Wankel, any fuel type, etc.) 
Polytropic process Basic info about polytropic processes, used in engine modeling 
Still to come:  
