Gear Shift Calculator
Optimal shift points · propulsive force · power & torque curves
SVR Autosport Motorsport Tools
Engine
Max RPM
Tyre radius [m]
Driven wheels
Vehicle & aero
Mass [kg]
Friction coef. μ
Ref. aero area [m²]
Drag coef. Cd
Downforce coef. Cl
Gearbox
Gear ratios
Number of gears
Final drive ratio
Drop gear ratio

>1 = kortere FD · <1 = langer · geen drop gear → 1.000

Effective final drive 4.683
Ratio optimiser
Geometric ratio calculator
Calculates intermediate ratios via a geometric series — equal RPM drop after every shift. Fix 1st and top gear, choose a focus speed range.
1st gear ratio (fixed)
Top gear ratio (fixed)
Focus speed range
Engine torque curve
Engine speed [rpm]Torque [Nm]
+ Add data point
Summary
Optimal shift points
ShiftRoad speedEngine RPM at shiftMethod
Optimal = shift point calculated from propulsive force curve intersection between gears. Max RPM = curves do not intersect; shift at redline.
Propulsive force vs road speed
Torque & power vs engine speed
Engine RPM vs road speed per gear
Each line shows engine RPM as a function of road speed for one gear. Vertical dashed lines mark the optimal shift points. The shaded band shows your usable RPM range (torque curve min to max RPM).
Longitudinal acceleration vs road speed
Net acceleration in G — calculated as (wheel force − drag) ÷ (mass × 9.81), capped at the traction limit. The bold envelope shows the maximum achievable acceleration at each road speed across all gears. Vertical dashed lines mark shift points.
SVR Gear Shift Calculator — SVR Autosport Motorsport Tools