Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/60r15 vs 205/60r16 Tire Comparison Side By Side
  205/60-15 205/60-16 Difference
Diameter inches (mm) 24.69 (627) 25.69 (652.4) 1 (25.4) 4.1%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 77.55 (1969.78) 80.69 (2049.58) 3.14 (79.8) 4.1%
Sidewall Height inches (mm) 4.84 (123) 4.84 (123) 0 (0) 0%
Revolutions per mile (km) 817.02 (507.67) 785.21 (487.91) -31.81 (-19.77) -3.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.81 mph (33.49 km/h)
25 mph (40.23 km/h)26.01 mph (41.86 km/h)
30 mph (48.28 km/h)31.22 mph (50.24 km/h)
35 mph (56.33 km/h)36.42 mph (58.61 km/h)
40 mph (64.37 km/h)41.62 mph (66.98 km/h)
45 mph (72.42 km/h)46.82 mph (75.35 km/h)
50 mph (80.47 km/h)52.03 mph (83.73 km/h)
55 mph (88.51 km/h)57.23 mph (92.1 km/h)
60 mph (96.56 km/h)62.43 mph (100.47 km/h)
65 mph (104.61 km/h)67.63 mph (108.85 km/h)
70 mph (112.65 km/h)72.84 mph (117.22 km/h)
75 mph (120.7 km/h)78.04 mph (125.59 km/h)
80 mph (128.75 km/h)83.24 mph (133.96 km/h)
85 mph (136.79 km/h)88.44 mph (142.34 km/h)
90 mph (144.84 km/h)93.65 mph (150.71 km/h)
95 mph (152.89 km/h)98.85 mph (159.08 km/h)
100 mph (160.93 km/h)104.05 mph (167.45 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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