Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
220/60r16 vs 220/65r17 Tire Comparison Side By Side
  220/60-16 220/65-17 Difference
Diameter inches (mm) 26.39 (670.4) 28.26 (717.8) 1.87 (47.4) 7.1%
Width inches (mm) 8.66 (220) 8.66 (220) 0 (0) 0%
Circum. inches (mm) 82.92 (2106.12) 88.78 (2255.04) 5.86 (148.91) 7.1%
Sidewall Height inches (mm) 5.2 (132) 5.63 (143) 0.43 (11) 8.3%
Revolutions per mile (km) 764.13 (474.81) 713.67 (443.45) -50.46 (-31.35) -6.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.41 mph (34.46 km/h)
25 mph (40.23 km/h)26.77 mph (43.08 km/h)
30 mph (48.28 km/h)32.12 mph (51.69 km/h)
35 mph (56.33 km/h)37.47 mph (60.31 km/h)
40 mph (64.37 km/h)42.83 mph (68.93 km/h)
45 mph (72.42 km/h)48.18 mph (77.54 km/h)
50 mph (80.47 km/h)53.54 mph (86.16 km/h)
55 mph (88.51 km/h)58.89 mph (94.77 km/h)
60 mph (96.56 km/h)64.24 mph (103.39 km/h)
65 mph (104.61 km/h)69.6 mph (112 km/h)
70 mph (112.65 km/h)74.95 mph (120.62 km/h)
75 mph (120.7 km/h)80.3 mph (129.24 km/h)
80 mph (128.75 km/h)85.66 mph (137.85 km/h)
85 mph (136.79 km/h)91.01 mph (146.47 km/h)
90 mph (144.84 km/h)96.36 mph (155.08 km/h)
95 mph (152.89 km/h)101.72 mph (163.7 km/h)
100 mph (160.93 km/h)107.07 mph (172.31 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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