Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/55r16 vs 135/90r16 Tire Comparison Side By Side
  195/55-16 135/90-16 Difference
Diameter inches (mm) 24.44 (620.9) 25.57 (649.4) 1.12 (28.5) 4.6%
Width inches (mm) 7.68 (195) 5.31 (135) -2.36 (-60) -30.8%
Circum. inches (mm) 76.8 (1950.61) 80.32 (2040.15) 3.53 (89.54) 4.6%
Sidewall Height inches (mm) 4.22 (107.25) 4.78 (121.5) 0.56 (14.25) 13.3%
Revolutions per mile (km) 825.04 (512.66) 788.84 (490.16) -36.21 (-22.5) -4.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.92 mph (33.66 km/h)
25 mph (40.23 km/h)26.15 mph (42.08 km/h)
30 mph (48.28 km/h)31.38 mph (50.5 km/h)
35 mph (56.33 km/h)36.61 mph (58.91 km/h)
40 mph (64.37 km/h)41.84 mph (67.33 km/h)
45 mph (72.42 km/h)47.07 mph (75.74 km/h)
50 mph (80.47 km/h)52.3 mph (84.16 km/h)
55 mph (88.51 km/h)57.52 mph (92.58 km/h)
60 mph (96.56 km/h)62.75 mph (100.99 km/h)
65 mph (104.61 km/h)67.98 mph (109.41 km/h)
70 mph (112.65 km/h)73.21 mph (117.83 km/h)
75 mph (120.7 km/h)78.44 mph (126.24 km/h)
80 mph (128.75 km/h)83.67 mph (134.66 km/h)
85 mph (136.79 km/h)88.9 mph (143.07 km/h)
90 mph (144.84 km/h)94.13 mph (151.49 km/h)
95 mph (152.89 km/h)99.36 mph (159.91 km/h)
100 mph (160.93 km/h)104.59 mph (168.32 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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