R&P -- 3.73:1 3.91:1 4.11:1 4.30:1 4.56:1 4.88:1 5.29:1 5.71:1
Tire Size -- 29" 30" 265/65R17 (30.6") 31" 255/70R17 (31.1") 245/75R17 (31.5") 265/70R17 (31.6") 285/65R17 (31.6") 235/80R17 (31.8") 32" 255/75R17 (32.1)" 275/70R17 (32.2)" 305/65R17 (32.6)" 235/85R17 (32.7)" 285/70R17 (32.7)" 33" 255/80R17 (33.1)" 295/70R17 (33.3)" 285/75R17 (33.8)" 305/70R17 (33.8)" 34" 315/70R17 (34.4)" 325/70R17 (34.9)" 35" 35.5" 36" 36.5" 37" 37.5" 38" 38.5" 39" 39.5" 40" 42" 44"
Transmission Gear -- L43: - 1st (3.67:1) - 2nd (2.11:1) - 3rd (1.45:1) - 4th (1.00:1) L45: - 1st (3.93:1) - 2nd (2.33:1) - 3rd (1.45:1) - 4th (1.00:1) L50/L52/G52/G54: - 1st (3.93:1) - 2nd (2.33:1) - 3rd (1.45:1) - 4th (1.00:1) - 5th (0.85:1) G58: - 1st (3.93:1) - 2nd (2.14:1) - 3rd (1.40:1) - 4th (1.00:1) - 5th (0.85:1) W56-A/B/C/D/E, W59: - 1st (3.95:1) - 2nd (2.14:1) - 3rd (1.38:1) - 4th (1.00:1) - 5th (0.85:1) R151F Turbo: - 1st (4.31:1) - 2nd (2.33:1) - 3rd (1.44:1) - 4th (1.00:1) - 5th (0.84:1) R150F: - 1st (3.83:1) - 2nd (2.06:1) - 3rd (1.44:1) - 4th (1.00:1) - 5th (0.84:1) RA60F: - 1st (4.171:1) - 2nd (2.190:1) - 3rd (1.488:1) - 4th (1.193:1) - 5th (1.000:1) - 6th (0.849:1) RA61F: - 1st (4.171:1) - 2nd (2.190:1) - 3rd (1.488:1) - 4th (1.193:1) - 5th (1.000:1) - 6th (0.799:1) RC62F: - 1st (3.98:1) - 2nd (2.02:1) - 3rd (1.32:1) - 4th (1.00:1) - 5th (0.85:1) - 6th (0.71:1) A340H/E/F Auto (4-spd): - 1st (2.80:1) - 2nd (1.53:1) - 3rd (1.00:1) - O.D. (0.71:1) A750F Auto (5-spd): - 1st (3.52:1) - 2nd (2.04:1) - 3rd (1.40:1) - 4th (1.00:1) - O.D. (0.72:1) A760F Auto (6-spd): - 1st (3.52:1) - 2nd (2.04:1) - 3rd (1.40:1) - 4th (1.00:1) - O.D. 1 (0.72:1) - O.D. 2 (0.59:1) H42: - 1st (3.56:1) - 2nd (2.29:1) - 3rd (1.41:1) - 4th (1.00:1) H55 (non-USA): - 1st (4.84:1) - 2nd (2.62:1) - 3rd (1.52:1) - 4th (1.00:1) - 5th (0.85:1)
Truck Speed -- 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 MPH
= Engine RPM
R&P -- 3.73:1 3.91:1 4.11:1 4.30:1 4.56:1 4.88:1 5.29:1 5.71:1
Tire Size -- 29" 30" 265/65R17 (30.6") 31" 255/70R17 (31.1") 245/75R17 (31.5") 265/70R17 (31.6") 285/65R17 (31.6") 235/80R17 (31.8") 32" 255/75R17 (32.1)" 275/70R17 (32.2)" 305/65R17 (32.6)" 235/85R17 (32.7)" 285/70R17 (32.7)" 33" 255/80R17 (33.1)" 295/70R17 (33.3)" 285/75R17 (33.8)" 305/70R17 (33.8)" 34" 315/70R17 (34.4)" 325/70R17 (34.9)" 35" 35.5" 36" 36.5" 37" 37.5" 38" 38.5" 39" 39.5" 40" 42" 44"
Transmission Gear -- L43: - 1st (3.67:1) - 2nd (2.11:1) - 3rd (1.45:1) - 4th (1.00:1) L45: - 1st (3.93:1) - 2nd (2.33:1) - 3rd (1.45:1) - 4th (1.00:1) L50/L52/G52/G54: - 1st (3.93:1) - 2nd (2.33:1) - 3rd (1.45:1) - 4th (1.00:1) - 5th (0.85:1) G58: - 1st (3.93:1) - 2nd (2.14:1) - 3rd (1.40:1) - 4th (1.00:1) - 5th (0.85:1) W56-A/B/C/D/E, W59: - 1st (3.95:1) - 2nd (2.14:1) - 3rd (1.38:1) - 4th (1.00:1) - 5th (0.85:1) R151F Turbo: - 1st (4.31:1) - 2nd (2.33:1) - 3rd (1.44:1) - 4th (1.00:1) - 5th (0.84:1) R150F: - 1st (3.83:1) - 2nd (2.06:1) - 3rd (1.44:1) - 4th (1.00:1) - 5th (0.84:1) RA60F: - 1st (4.171:1) - 2nd (2.190:1) - 3rd (1.488:1) - 4th (1.193:1) - 5th (1.000:1) - 6th (0.849:1) RA61F: - 1st (4.171:1) - 2nd (2.190:1) - 3rd (1.488:1) - 4th (1.193:1) - 5th (1.000:1) - 6th (0.799:1) RC62F: - 1st (3.98:1) - 2nd (2.02:1) - 3rd (1.32:1) - 4th (1.00:1) - 5th (0.85:1) - 6th (0.71:1) A340H/E/F Auto (4-spd): - 1st (2.80:1) - 2nd (1.53:1) - 3rd (1.00:1) - O.D. (0.71:1) A750F Auto (5-spd): - 1st (3.52:1) - 2nd (2.04:1) - 3rd (1.40:1) - 4th (1.00:1) - O.D. (0.72:1) A760F Auto (6-spd): - 1st (3.52:1) - 2nd (2.04:1) - 3rd (1.40:1) - 4th (1.00:1) - O.D. 1 (0.72:1) - O.D. 2 (0.59:1) H42: - 1st (3.56:1) - 2nd (2.29:1) - 3rd (1.41:1) - 4th (1.00:1) H55 (non-USA): - 1st (4.84:1) - 2nd (2.62:1) - 3rd (1.52:1) - 4th (1.00:1) - 5th (0.85:1)
Engine Speed -- 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 RPM
= MPH Truck Speed
Note: Be sure to double-check your tire's actual height. Your 35" tires may only measure 34-inches tall! If needed, we have a transmission ratio chart here .