Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
185/60r14 vs 195/55r14 Tire Comparison Side By Side
  185/60-14 195/55-14 Difference
Diameter inches (mm) 22.74 (577.6) 22.44 (570.1) -0.3 (-7.5) -1.3%
Width inches (mm) 7.28 (185) 7.68 (195) 0.39 (10) 5.4%
Circum. inches (mm) 71.44 (1814.58) 70.51 (1791.02) -0.93 (-23.56) -1.3%
Sidewall Height inches (mm) 4.37 (111) 4.22 (107.25) -0.15 (-3.75) -3.4%
Revolutions per mile (km) 886.89 (551.09) 898.56 (558.34) 11.67 (7.25) 1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.74 mph (31.77 km/h)
25 mph (40.23 km/h)24.68 mph (39.71 km/h)
30 mph (48.28 km/h)29.61 mph (47.65 km/h)
35 mph (56.33 km/h)34.55 mph (55.6 km/h)
40 mph (64.37 km/h)39.48 mph (63.54 km/h)
45 mph (72.42 km/h)44.42 mph (71.48 km/h)
50 mph (80.47 km/h)49.35 mph (79.42 km/h)
55 mph (88.51 km/h)54.29 mph (87.36 km/h)
60 mph (96.56 km/h)59.22 mph (95.31 km/h)
65 mph (104.61 km/h)64.16 mph (103.25 km/h)
70 mph (112.65 km/h)69.09 mph (111.19 km/h)
75 mph (120.7 km/h)74.03 mph (119.13 km/h)
80 mph (128.75 km/h)78.96 mph (127.08 km/h)
85 mph (136.79 km/h)83.9 mph (135.02 km/h)
90 mph (144.84 km/h)88.83 mph (142.96 km/h)
95 mph (152.89 km/h)93.77 mph (150.9 km/h)
100 mph (160.93 km/h)98.7 mph (158.85 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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