Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r14 vs 185/60r14 Tire Comparison Side By Side
  195/60-14 185/60-14 Difference
Diameter inches (mm) 23.21 (589.6) 22.74 (577.6) -0.47 (-12) -2%
Width inches (mm) 7.68 (195) 7.28 (185) -0.39 (-10) -5.1%
Circum. inches (mm) 72.92 (1852.28) 71.44 (1814.58) -1.48 (-37.7) -2%
Sidewall Height inches (mm) 4.61 (117) 4.37 (111) -0.24 (-6) -5.1%
Revolutions per mile (km) 868.84 (539.87) 886.89 (551.09) 18.05 (11.22) 2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.59 mph (31.53 km/h)
25 mph (40.23 km/h)24.49 mph (39.41 km/h)
30 mph (48.28 km/h)29.39 mph (47.3 km/h)
35 mph (56.33 km/h)34.29 mph (55.18 km/h)
40 mph (64.37 km/h)39.19 mph (63.06 km/h)
45 mph (72.42 km/h)44.08 mph (70.95 km/h)
50 mph (80.47 km/h)48.98 mph (78.83 km/h)
55 mph (88.51 km/h)53.88 mph (86.71 km/h)
60 mph (96.56 km/h)58.78 mph (94.6 km/h)
65 mph (104.61 km/h)63.68 mph (102.48 km/h)
70 mph (112.65 km/h)68.58 mph (110.36 km/h)
75 mph (120.7 km/h)73.47 mph (118.24 km/h)
80 mph (128.75 km/h)78.37 mph (126.13 km/h)
85 mph (136.79 km/h)83.27 mph (134.01 km/h)
90 mph (144.84 km/h)88.17 mph (141.89 km/h)
95 mph (152.89 km/h)93.07 mph (149.78 km/h)
100 mph (160.93 km/h)97.96 mph (157.66 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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