Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/70r17 vs 285/75r17 Tire Comparison Side By Side
  295/70-17 285/75-17 Difference
Diameter inches (mm) 33.26 (844.8) 33.83 (859.3) 0.57 (14.5) 1.7%
Width inches (mm) 11.61 (295) 11.22 (285) -0.39 (-10) -3.4%
Circum. inches (mm) 104.49 (2654.02) 106.28 (2699.57) 1.79 (45.55) 1.7%
Sidewall Height inches (mm) 8.13 (206.5) 8.42 (213.75) 0.29 (7.25) 3.5%
Revolutions per mile (km) 606.38 (376.79) 596.15 (370.43) -10.23 (-6.36) -1.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.34 mph (32.74 km/h)
25 mph (40.23 km/h)25.43 mph (40.92 km/h)
30 mph (48.28 km/h)30.51 mph (49.11 km/h)
35 mph (56.33 km/h)35.6 mph (57.29 km/h)
40 mph (64.37 km/h)40.69 mph (65.48 km/h)
45 mph (72.42 km/h)45.77 mph (73.66 km/h)
50 mph (80.47 km/h)50.86 mph (81.85 km/h)
55 mph (88.51 km/h)55.94 mph (90.03 km/h)
60 mph (96.56 km/h)61.03 mph (98.22 km/h)
65 mph (104.61 km/h)66.12 mph (106.4 km/h)
70 mph (112.65 km/h)71.2 mph (114.59 km/h)
75 mph (120.7 km/h)76.29 mph (122.77 km/h)
80 mph (128.75 km/h)81.37 mph (130.96 km/h)
85 mph (136.79 km/h)86.46 mph (139.14 km/h)
90 mph (144.84 km/h)91.54 mph (147.33 km/h)
95 mph (152.89 km/h)96.63 mph (155.51 km/h)
100 mph (160.93 km/h)101.72 mph (163.7 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
2.35 2.73 2.94 3.07 3.21 3.31 3.42 3.55 3.73 3.91 4.11 4.27 4.56 4.88 5.13 5.29 5.38 5.71 6.17 7.17
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