Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/50r14 vs 215/50r14 Tire Comparison Side By Side
  195/50-14 215/50-14 Difference
Diameter inches (mm) 21.68 (550.6) 22.46 (570.6) 0.79 (20) 3.6%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 68.1 (1729.76) 70.57 (1792.59) 2.47 (62.83) 3.6%
Sidewall Height inches (mm) 3.84 (97.5) 4.23 (107.5) 0.39 (10) 10.3%
Revolutions per mile (km) 930.39 (578.11) 897.77 (557.85) -32.61 (-20.26) -3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.73 mph (33.36 km/h)
25 mph (40.23 km/h)25.91 mph (41.7 km/h)
30 mph (48.28 km/h)31.09 mph (50.03 km/h)
35 mph (56.33 km/h)36.27 mph (58.37 km/h)
40 mph (64.37 km/h)41.45 mph (66.71 km/h)
45 mph (72.42 km/h)46.63 mph (75.05 km/h)
50 mph (80.47 km/h)51.82 mph (83.39 km/h)
55 mph (88.51 km/h)57 mph (91.73 km/h)
60 mph (96.56 km/h)62.18 mph (100.07 km/h)
65 mph (104.61 km/h)67.36 mph (108.41 km/h)
70 mph (112.65 km/h)72.54 mph (116.75 km/h)
75 mph (120.7 km/h)77.72 mph (125.09 km/h)
80 mph (128.75 km/h)82.91 mph (133.42 km/h)
85 mph (136.79 km/h)88.09 mph (141.76 km/h)
90 mph (144.84 km/h)93.27 mph (150.1 km/h)
95 mph (152.89 km/h)98.45 mph (158.44 km/h)
100 mph (160.93 km/h)103.63 mph (166.78 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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