Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
240/55r16 vs 240/60r16 Tire Comparison Side By Side
  240/55-16 240/60-16 Difference
Diameter inches (mm) 26.39 (670.4) 27.34 (694.4) 0.94 (24) 3.6%
Width inches (mm) 9.45 (240) 9.45 (240) 0 (0) 0%
Circum. inches (mm) 82.92 (2106.12) 85.89 (2181.52) 2.97 (75.4) 3.6%
Sidewall Height inches (mm) 5.2 (132) 5.67 (144) 0.47 (12) 9.1%
Revolutions per mile (km) 764.13 (474.81) 737.72 (458.39) -26.41 (-16.41) -3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.72 mph (33.34 km/h)
25 mph (40.23 km/h)25.89 mph (41.67 km/h)
30 mph (48.28 km/h)31.07 mph (50.01 km/h)
35 mph (56.33 km/h)36.25 mph (58.34 km/h)
40 mph (64.37 km/h)41.43 mph (66.68 km/h)
45 mph (72.42 km/h)46.61 mph (75.01 km/h)
50 mph (80.47 km/h)51.79 mph (83.35 km/h)
55 mph (88.51 km/h)56.97 mph (91.68 km/h)
60 mph (96.56 km/h)62.15 mph (100.02 km/h)
65 mph (104.61 km/h)67.33 mph (108.35 km/h)
70 mph (112.65 km/h)72.51 mph (116.69 km/h)
75 mph (120.7 km/h)77.68 mph (125.02 km/h)
80 mph (128.75 km/h)82.86 mph (133.36 km/h)
85 mph (136.79 km/h)88.04 mph (141.69 km/h)
90 mph (144.84 km/h)93.22 mph (150.03 km/h)
95 mph (152.89 km/h)98.4 mph (158.36 km/h)
100 mph (160.93 km/h)103.58 mph (166.7 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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