Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/50r15 vs 195/60r15 Tire Comparison Side By Side
  195/50-15 195/60-15 Difference
Diameter inches (mm) 22.68 (576) 24.21 (615) 1.54 (39) 6.8%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 71.24 (1809.56) 76.07 (1932.08) 4.82 (122.52) 6.8%
Sidewall Height inches (mm) 3.84 (97.5) 4.61 (117) 0.77 (19.5) 20%
Revolutions per mile (km) 889.36 (552.62) 832.96 (517.58) -56.4 (-35.04) -6.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.35 mph (34.37 km/h)
25 mph (40.23 km/h)26.69 mph (42.96 km/h)
30 mph (48.28 km/h)32.03 mph (51.55 km/h)
35 mph (56.33 km/h)37.37 mph (60.14 km/h)
40 mph (64.37 km/h)42.71 mph (68.73 km/h)
45 mph (72.42 km/h)48.05 mph (77.32 km/h)
50 mph (80.47 km/h)53.39 mph (85.92 km/h)
55 mph (88.51 km/h)58.72 mph (94.51 km/h)
60 mph (96.56 km/h)64.06 mph (103.1 km/h)
65 mph (104.61 km/h)69.4 mph (111.69 km/h)
70 mph (112.65 km/h)74.74 mph (120.28 km/h)
75 mph (120.7 km/h)80.08 mph (128.87 km/h)
80 mph (128.75 km/h)85.42 mph (137.47 km/h)
85 mph (136.79 km/h)90.76 mph (146.06 km/h)
90 mph (144.84 km/h)96.09 mph (154.65 km/h)
95 mph (152.89 km/h)101.43 mph (163.24 km/h)
100 mph (160.93 km/h)106.77 mph (171.83 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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