Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r16 vs 195/60r15 Tire Comparison Side By Side
  195/60-16 195/60-15 Difference
Diameter inches (mm) 25.21 (640.4) 24.21 (615) -1 (-25.4) -4%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 79.21 (2011.88) 76.07 (1932.08) -3.14 (-79.8) -4%
Sidewall Height inches (mm) 4.61 (117) 4.61 (117) 0 (0) 0%
Revolutions per mile (km) 799.92 (497.05) 832.96 (517.58) 33.04 (20.53) 4.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.21 mph (30.91 km/h)
25 mph (40.23 km/h)24.01 mph (38.64 km/h)
30 mph (48.28 km/h)28.81 mph (46.37 km/h)
35 mph (56.33 km/h)33.61 mph (54.09 km/h)
40 mph (64.37 km/h)38.41 mph (61.82 km/h)
45 mph (72.42 km/h)43.22 mph (69.55 km/h)
50 mph (80.47 km/h)48.02 mph (77.28 km/h)
55 mph (88.51 km/h)52.82 mph (85 km/h)
60 mph (96.56 km/h)57.62 mph (92.73 km/h)
65 mph (104.61 km/h)62.42 mph (100.46 km/h)
70 mph (112.65 km/h)67.22 mph (108.19 km/h)
75 mph (120.7 km/h)72.03 mph (115.91 km/h)
80 mph (128.75 km/h)76.83 mph (123.64 km/h)
85 mph (136.79 km/h)81.63 mph (131.37 km/h)
90 mph (144.84 km/h)86.43 mph (139.1 km/h)
95 mph (152.89 km/h)91.23 mph (146.82 km/h)
100 mph (160.93 km/h)96.03 mph (154.55 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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