Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/55r16 vs 195/65r16 Tire Comparison Side By Side
  205/55-16 195/65-16 Difference
Diameter inches (mm) 24.88 (631.9) 25.98 (659.9) 1.1 (28) 4.4%
Width inches (mm) 8.07 (205) 7.68 (195) -0.39 (-10) -4.9%
Circum. inches (mm) 78.16 (1985.17) 81.62 (2073.14) 3.46 (87.96) 4.4%
Sidewall Height inches (mm) 4.44 (112.75) 4.99 (126.75) 0.55 (14) 12.4%
Revolutions per mile (km) 810.68 (503.73) 776.28 (482.36) -34.4 (-21.37) -4.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.89 mph (33.61 km/h)
25 mph (40.23 km/h)26.11 mph (42.02 km/h)
30 mph (48.28 km/h)31.33 mph (50.42 km/h)
35 mph (56.33 km/h)36.55 mph (58.82 km/h)
40 mph (64.37 km/h)41.77 mph (67.23 km/h)
45 mph (72.42 km/h)46.99 mph (75.63 km/h)
50 mph (80.47 km/h)52.22 mph (84.03 km/h)
55 mph (88.51 km/h)57.44 mph (92.44 km/h)
60 mph (96.56 km/h)62.66 mph (100.84 km/h)
65 mph (104.61 km/h)67.88 mph (109.24 km/h)
70 mph (112.65 km/h)73.1 mph (117.65 km/h)
75 mph (120.7 km/h)78.32 mph (126.05 km/h)
80 mph (128.75 km/h)83.54 mph (134.45 km/h)
85 mph (136.79 km/h)88.77 mph (142.86 km/h)
90 mph (144.84 km/h)93.99 mph (151.26 km/h)
95 mph (152.89 km/h)99.21 mph (159.66 km/h)
100 mph (160.93 km/h)104.43 mph (168.07 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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