Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
240/50r16 vs 240/60r17 Tire Comparison Side By Side
  240/50-16 240/60-17 Difference
Diameter inches (mm) 25.45 (646.4) 28.34 (719.8) 2.89 (73.4) 11.4%
Width inches (mm) 9.45 (240) 9.45 (240) 0 (0) 0%
Circum. inches (mm) 79.95 (2030.73) 89.03 (2261.32) 9.08 (230.59) 11.4%
Sidewall Height inches (mm) 4.72 (120) 5.67 (144) 0.94 (24) 20%
Revolutions per mile (km) 792.5 (492.43) 711.68 (442.22) -80.81 (-50.21) -10.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.27 mph (35.84 km/h)
25 mph (40.23 km/h)27.84 mph (44.8 km/h)
30 mph (48.28 km/h)33.41 mph (53.76 km/h)
35 mph (56.33 km/h)38.97 mph (62.72 km/h)
40 mph (64.37 km/h)44.54 mph (71.68 km/h)
45 mph (72.42 km/h)50.11 mph (80.64 km/h)
50 mph (80.47 km/h)55.68 mph (89.6 km/h)
55 mph (88.51 km/h)61.25 mph (98.57 km/h)
60 mph (96.56 km/h)66.81 mph (107.53 km/h)
65 mph (104.61 km/h)72.38 mph (116.49 km/h)
70 mph (112.65 km/h)77.95 mph (125.45 km/h)
75 mph (120.7 km/h)83.52 mph (134.41 km/h)
80 mph (128.75 km/h)89.08 mph (143.37 km/h)
85 mph (136.79 km/h)94.65 mph (152.33 km/h)
90 mph (144.84 km/h)100.22 mph (161.29 km/h)
95 mph (152.89 km/h)105.79 mph (170.25 km/h)
100 mph (160.93 km/h)111.36 mph (179.21 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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