Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/55r14 vs 195/70r14 Tire Comparison Side By Side
  195/55-14 195/70-14 Difference
Diameter inches (mm) 22.44 (570.1) 24.75 (628.6) 2.3 (58.5) 10.3%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 70.51 (1791.02) 77.75 (1974.81) 7.24 (183.78) 10.3%
Sidewall Height inches (mm) 4.22 (107.25) 5.37 (136.5) 1.15 (29.25) 27.3%
Revolutions per mile (km) 898.56 (558.34) 814.94 (506.38) -83.62 (-51.96) -9.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.05 mph (35.49 km/h)
25 mph (40.23 km/h)27.57 mph (44.36 km/h)
30 mph (48.28 km/h)33.08 mph (53.23 km/h)
35 mph (56.33 km/h)38.59 mph (62.11 km/h)
40 mph (64.37 km/h)44.1 mph (70.98 km/h)
45 mph (72.42 km/h)49.62 mph (79.85 km/h)
50 mph (80.47 km/h)55.13 mph (88.72 km/h)
55 mph (88.51 km/h)60.64 mph (97.6 km/h)
60 mph (96.56 km/h)66.16 mph (106.47 km/h)
65 mph (104.61 km/h)71.67 mph (115.34 km/h)
70 mph (112.65 km/h)77.18 mph (124.21 km/h)
75 mph (120.7 km/h)82.7 mph (133.09 km/h)
80 mph (128.75 km/h)88.21 mph (141.96 km/h)
85 mph (136.79 km/h)93.72 mph (150.83 km/h)
90 mph (144.84 km/h)99.24 mph (159.7 km/h)
95 mph (152.89 km/h)104.75 mph (168.58 km/h)
100 mph (160.93 km/h)110.26 mph (177.45 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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