Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/50r16 vs 235/60r16 Tire Comparison Side By Side
  235/50-16 235/60-16 Difference
Diameter inches (mm) 25.25 (641.4) 27.1 (688.4) 1.85 (47) 7.3%
Width inches (mm) 9.25 (235) 9.25 (235) 0 (0) 0%
Circum. inches (mm) 79.33 (2015.02) 85.14 (2162.67) 5.81 (147.65) 7.3%
Sidewall Height inches (mm) 4.63 (117.5) 5.55 (141) 0.93 (23.5) 20%
Revolutions per mile (km) 798.67 (496.27) 744.15 (462.39) -54.53 (-33.88) -6.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.47 mph (34.55 km/h)
25 mph (40.23 km/h)26.83 mph (43.18 km/h)
30 mph (48.28 km/h)32.2 mph (51.82 km/h)
35 mph (56.33 km/h)37.56 mph (60.45 km/h)
40 mph (64.37 km/h)42.93 mph (69.09 km/h)
45 mph (72.42 km/h)48.3 mph (77.73 km/h)
50 mph (80.47 km/h)53.66 mph (86.36 km/h)
55 mph (88.51 km/h)59.03 mph (95 km/h)
60 mph (96.56 km/h)64.4 mph (103.64 km/h)
65 mph (104.61 km/h)69.76 mph (112.27 km/h)
70 mph (112.65 km/h)75.13 mph (120.91 km/h)
75 mph (120.7 km/h)80.5 mph (129.55 km/h)
80 mph (128.75 km/h)85.86 mph (138.18 km/h)
85 mph (136.79 km/h)91.23 mph (146.82 km/h)
90 mph (144.84 km/h)96.59 mph (155.45 km/h)
95 mph (152.89 km/h)101.96 mph (164.09 km/h)
100 mph (160.93 km/h)107.33 mph (172.73 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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