Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/70r14 vs 215/70r14 Tire Comparison Side By Side
  195/70-14 215/70-14 Difference
Diameter inches (mm) 24.75 (628.6) 25.85 (656.6) 1.1 (28) 4.5%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 77.75 (1974.81) 81.21 (2062.77) 3.46 (87.96) 4.5%
Sidewall Height inches (mm) 5.37 (136.5) 5.93 (150.5) 0.55 (14) 10.3%
Revolutions per mile (km) 814.94 (506.38) 780.19 (484.78) -34.75 (-21.59) -4.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.89 mph (33.62 km/h)
25 mph (40.23 km/h)26.11 mph (42.03 km/h)
30 mph (48.28 km/h)31.34 mph (50.43 km/h)
35 mph (56.33 km/h)36.56 mph (58.84 km/h)
40 mph (64.37 km/h)41.78 mph (67.24 km/h)
45 mph (72.42 km/h)47 mph (75.65 km/h)
50 mph (80.47 km/h)52.23 mph (84.05 km/h)
55 mph (88.51 km/h)57.45 mph (92.46 km/h)
60 mph (96.56 km/h)62.67 mph (100.86 km/h)
65 mph (104.61 km/h)67.9 mph (109.27 km/h)
70 mph (112.65 km/h)73.12 mph (117.67 km/h)
75 mph (120.7 km/h)78.34 mph (126.08 km/h)
80 mph (128.75 km/h)83.56 mph (134.48 km/h)
85 mph (136.79 km/h)88.79 mph (142.89 km/h)
90 mph (144.84 km/h)94.01 mph (151.29 km/h)
95 mph (152.89 km/h)99.23 mph (159.7 km/h)
100 mph (160.93 km/h)104.45 mph (168.1 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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