HanksRS - Wheel Torque Calculator (08/18/20) Rev1   Assumptions Tune+ W400 kit = Estimated limit 400 lb-ft torque at the wheels. 93 octane Estimated drivetrain losses (16%) = 400 lb-ft / 0.84 = 476.2 lb-ft. These calculations are without regard to machine efficiency.   User Inputs Estimated Engine Torque (Te) (lb-ft) Tire Diameter Note: 235/35R19 Michelin PSS = 25.5 Note: 275/35R18 RE-71R = 25.6 (inches)     Technical Inputs Focus RS Gear Ratios (ix) 1st 3.23 2nd 1.95 3rd 1.32 4th 1.03 5th 1.13 6th 0.94 Rev 1.42 Final Drive Ratio (io1) 4.06 (1st-4th) Final Drive Ratio (io2) 2.95 (5th,6th,rev)		Conversions 1 lb-ft = 1.35582 N-m 1 N-m = 0.73756 lb-ft 1 m = 39.37007 in 1 in = 0.0254 m 1 N = 0.224809 lb-f
Calculations   Wheel Torque Tw = (ix * io * Te) / 2 1st Gear (N-m)   (lb-ft) 2nd Gear (N-m)   (lb-ft) 3rd Gear (N-m)   (lb-ft) 4th Gear (N-m)   (lb-ft) 5th Gear (N-m)   (lb-ft) 6th Gear (N-m)   (lb-ft) Rev Gear (N-m)   (lb-ft)		Wheel Radius (rw) m   Wheel Force Fw = (Tw / rw) 1st Gear (N)   (lb-f) 2nd Gear (N)   (lb-f) 3rd Gear (N)   (lb-f) 4th Gear (N)   (lb-f) 5th Gear (N)   (lb-f) 6th Gear (N)   (lb-f) Rev Gear (N)   (lb-f)