Gear Ratio / RPM / Speed Calculator
Determine Speed: Use this calculator when you know your gearing and want to find your Speed at a given RPM
Determine RPM: Use this calculator when you know your gearing and want to find your RPM at a given speed
Determine Ratio: Use this calculator when you know your final drive, but want to find your Gear Ratio for a given RPM & speed.
Note: The circumference of the tire is computed for an ideal circle for the
given tire dimensions.
You can use the "adjustment (%)" to raise or lower this by a percentage as you see appropriate
|B5 S4 6-speed gearing is:||VW 1.8T trannys coded:
EBQ, EMT, EGX, FBW
|Gear Ratios:||Manual (Automatic)||Manual|
|Final Drive||4.111:1 (3.511:1)||3.938|
The above is the S4 (6-speed manual) gearing (RPM vs Speed) per data logging using APR's ECU Explorer. The bold areas are the actual datapoints logged, whereas the thin lines is the linear trendline with 0-intercept.