Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r20 vs 285/35r19 Tire Comparison Side By Side
  295/25-20 285/35-19 Difference
Diameter inches (mm) 25.81 (655.5) 26.85 (682.1) 1.05 (26.6) 4.1%
Width inches (mm) 11.61 (295) 11.22 (285) -0.39 (-10) -3.4%
Circum. inches (mm) 81.08 (2059.31) 84.37 (2142.88) 3.29 (83.57) 4.1%
Sidewall Height inches (mm) 2.9 (73.75) 3.93 (99.75) 1.02 (26) 35.3%
Revolutions per mile (km) 781.5 (485.6) 751.02 (466.66) -30.48 (-18.94) -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 (41.87 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 (66.99 km/h)
45 mph (72.42 km/h)46.83 mph (75.36 km/h)
50 mph (80.47 km/h)52.03 mph (83.73 km/h)
55 mph (88.51 km/h)57.23 mph (92.11 km/h)
60 mph (96.56 km/h)62.43 mph (100.48 km/h)
65 mph (104.61 km/h)67.64 mph (108.85 km/h)
70 mph (112.65 km/h)72.84 mph (117.23 km/h)
75 mph (120.7 km/h)78.04 mph (125.6 km/h)
80 mph (128.75 km/h)83.25 mph (133.97 km/h)
85 mph (136.79 km/h)88.45 mph (142.35 km/h)
90 mph (144.84 km/h)93.65 mph (150.72 km/h)
95 mph (152.89 km/h)98.86 mph (159.09 km/h)
100 mph (160.93 km/h)104.06 mph (167.47 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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