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 195/60r15 Tire Comparison Side By Side
  195/60-14 195/60-15 Difference
Diameter inches (mm) 23.21 (589.6) 24.21 (615) 1 (25.4) 4.3%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 72.92 (1852.28) 76.07 (1932.08) 3.14 (79.8) 4.3%
Sidewall Height inches (mm) 4.61 (117) 4.61 (117) 0 (0) 0%
Revolutions per mile (km) 868.84 (539.87) 832.96 (517.58) -35.88 (-22.3) -4.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.86 mph (33.57 km/h)
25 mph (40.23 km/h)26.08 mph (41.97 km/h)
30 mph (48.28 km/h)31.29 mph (50.36 km/h)
35 mph (56.33 km/h)36.51 mph (58.75 km/h)
40 mph (64.37 km/h)41.72 mph (67.15 km/h)
45 mph (72.42 km/h)46.94 mph (75.54 km/h)
50 mph (80.47 km/h)52.15 mph (83.93 km/h)
55 mph (88.51 km/h)57.37 mph (92.33 km/h)
60 mph (96.56 km/h)62.58 mph (100.72 km/h)
65 mph (104.61 km/h)67.8 mph (109.11 km/h)
70 mph (112.65 km/h)73.02 mph (117.51 km/h)
75 mph (120.7 km/h)78.23 mph (125.9 km/h)
80 mph (128.75 km/h)83.45 mph (134.29 km/h)
85 mph (136.79 km/h)88.66 mph (142.69 km/h)
90 mph (144.84 km/h)93.88 mph (151.08 km/h)
95 mph (152.89 km/h)99.09 mph (159.47 km/h)
100 mph (160.93 km/h)104.31 mph (167.87 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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