Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
110/80r17 vs 110/90r17 Tire Comparison Side By Side
  110/80-17 110/90-17 Difference
Diameter inches (mm) 23.93 (607.8) 24.8 (629.8) 0.87 (22) 3.6%
Width inches (mm) 4.33 (110) 4.33 (110) 0 (0) 0%
Circum. inches (mm) 75.18 (1909.46) 77.9 (1978.58) 2.72 (69.12) 3.6%
Sidewall Height inches (mm) 3.46 (88) 3.9 (99) 0.43 (11) 12.5%
Revolutions per mile (km) 842.83 (523.71) 813.39 (505.41) -29.44 (-18.29) -3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.72 mph (33.35 km/h)
25 mph (40.23 km/h)25.9 mph (41.69 km/h)
30 mph (48.28 km/h)31.09 mph (50.03 km/h)
35 mph (56.33 km/h)36.27 mph (58.37 km/h)
40 mph (64.37 km/h)41.45 mph (66.7 km/h)
45 mph (72.42 km/h)46.63 mph (75.04 km/h)
50 mph (80.47 km/h)51.81 mph (83.38 km/h)
55 mph (88.51 km/h)56.99 mph (91.72 km/h)
60 mph (96.56 km/h)62.17 mph (100.06 km/h)
65 mph (104.61 km/h)67.35 mph (108.39 km/h)
70 mph (112.65 km/h)72.53 mph (116.73 km/h)
75 mph (120.7 km/h)77.71 mph (125.07 km/h)
80 mph (128.75 km/h)82.9 mph (133.41 km/h)
85 mph (136.79 km/h)88.08 mph (141.75 km/h)
90 mph (144.84 km/h)93.26 mph (150.08 km/h)
95 mph (152.89 km/h)98.44 mph (158.42 km/h)
100 mph (160.93 km/h)103.62 mph (166.76 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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