Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/60r17 vs 295/70r17 Tire Comparison Side By Side
  285/60-17 295/70-17 Difference
Diameter inches (mm) 30.46 (773.8) 33.26 (844.8) 2.8 (71) 9.2%
Width inches (mm) 11.22 (285) 11.61 (295) 0.39 (10) 3.5%
Circum. inches (mm) 95.71 (2430.96) 104.49 (2654.02) 8.78 (223.05) 9.2%
Sidewall Height inches (mm) 6.73 (171) 8.13 (206.5) 1.4 (35.5) 20.8%
Revolutions per mile (km) 662.02 (411.36) 606.38 (376.79) -55.64 (-34.57) -8.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.84 mph (35.14 km/h)
25 mph (40.23 km/h)27.29 mph (43.93 km/h)
30 mph (48.28 km/h)32.75 mph (52.71 km/h)
35 mph (56.33 km/h)38.21 mph (61.5 km/h)
40 mph (64.37 km/h)43.67 mph (70.28 km/h)
45 mph (72.42 km/h)49.13 mph (79.07 km/h)
50 mph (80.47 km/h)54.59 mph (87.85 km/h)
55 mph (88.51 km/h)60.05 mph (96.64 km/h)
60 mph (96.56 km/h)65.51 mph (105.42 km/h)
65 mph (104.61 km/h)70.96 mph (114.21 km/h)
70 mph (112.65 km/h)76.42 mph (122.99 km/h)
75 mph (120.7 km/h)81.88 mph (131.78 km/h)
80 mph (128.75 km/h)87.34 mph (140.56 km/h)
85 mph (136.79 km/h)92.8 mph (149.35 km/h)
90 mph (144.84 km/h)98.26 mph (158.13 km/h)
95 mph (152.89 km/h)103.72 mph (166.92 km/h)
100 mph (160.93 km/h)109.18 mph (175.7 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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