Wheel Torque Calculator

Inputs

Engine torque (T_e)

Engine torque before drivetrain multiplication.

N·m

Transmission ratio (G)

Selected gear ratio.

Final drive ratio (F)

Axle or differential ratio.

Transfer ratio (T)

Transfer-case or auxiliary ratio. Use 1.0 if none.

Drivetrain efficiency (eta)

Efficiency from engine output to the wheel.

Tire rolling radius (r_t)

Rolling tire radius used to convert torque to contact force.

Default result

Wheel torque(T_w)

3,525N·m

Pass

Also computed

Tire contact force(F_t)10,680N

2,401 lbf

Overall ratio13.055

Method notes 2 notes

Wheel torque is idealized engine torque times gear ratios and drivetrain efficiency.
Actual launch force is limited by tire grip, weight transfer, traction control, clutch or converter behavior and drivetrain strength.