Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
150/60r17 vs 150/70r17 Tire Comparison Side By Side
  150/60-17 150/70-17 Difference
Diameter inches (mm) 24.09 (611.8) 25.27 (641.8) 1.18 (30) 4.9%
Width inches (mm) 5.91 (150) 5.91 (150) 0 (0) 0%
Circum. inches (mm) 75.67 (1922.03) 79.38 (2016.27) 3.71 (94.25) 4.9%
Sidewall Height inches (mm) 3.54 (90) 4.13 (105) 0.59 (15) 16.7%
Revolutions per mile (km) 837.32 (520.28) 798.18 (495.96) -39.14 (-24.32) -4.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.98 mph (33.77 km/h)
25 mph (40.23 km/h)26.23 mph (42.21 km/h)
30 mph (48.28 km/h)31.47 mph (50.65 km/h)
35 mph (56.33 km/h)36.72 mph (59.09 km/h)
40 mph (64.37 km/h)41.96 mph (67.53 km/h)
45 mph (72.42 km/h)47.21 mph (75.97 km/h)
50 mph (80.47 km/h)52.45 mph (84.41 km/h)
55 mph (88.51 km/h)57.7 mph (92.85 km/h)
60 mph (96.56 km/h)62.94 mph (101.3 km/h)
65 mph (104.61 km/h)68.19 mph (109.74 km/h)
70 mph (112.65 km/h)73.43 mph (118.18 km/h)
75 mph (120.7 km/h)78.68 mph (126.62 km/h)
80 mph (128.75 km/h)83.92 mph (135.06 km/h)
85 mph (136.79 km/h)89.17 mph (143.5 km/h)
90 mph (144.84 km/h)94.41 mph (151.94 km/h)
95 mph (152.89 km/h)99.66 mph (160.38 km/h)
100 mph (160.93 km/h)104.9 mph (168.83 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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