Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/40r16 vs 195/40r17 Tire Comparison Side By Side
  195/40-16 195/40-17 Difference
Diameter inches (mm) 22.14 (562.4) 23.14 (587.8) 1 (25.4) 4.5%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 69.56 (1766.83) 72.7 (1846.63) 3.14 (79.8) 4.5%
Sidewall Height inches (mm) 3.07 (78) 3.07 (78) 0 (0) 0%
Revolutions per mile (km) 910.86 (565.98) 871.5 (541.53) -39.36 (-24.46) -4.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.9 mph (33.64 km/h)
25 mph (40.23 km/h)26.13 mph (42.05 km/h)
30 mph (48.28 km/h)31.35 mph (50.46 km/h)
35 mph (56.33 km/h)36.58 mph (58.87 km/h)
40 mph (64.37 km/h)41.81 mph (67.28 km/h)
45 mph (72.42 km/h)47.03 mph (75.69 km/h)
50 mph (80.47 km/h)52.26 mph (84.1 km/h)
55 mph (88.51 km/h)57.48 mph (92.51 km/h)
60 mph (96.56 km/h)62.71 mph (100.92 km/h)
65 mph (104.61 km/h)67.94 mph (109.33 km/h)
70 mph (112.65 km/h)73.16 mph (117.74 km/h)
75 mph (120.7 km/h)78.39 mph (126.15 km/h)
80 mph (128.75 km/h)83.61 mph (134.56 km/h)
85 mph (136.79 km/h)88.84 mph (142.97 km/h)
90 mph (144.84 km/h)94.06 mph (151.38 km/h)
95 mph (152.89 km/h)99.29 mph (159.79 km/h)
100 mph (160.93 km/h)104.52 mph (168.2 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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