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 265/76r17 Tire Comparison Side By Side
  220/60-16 265/76-17 Difference
Diameter inches (mm) 26.39 (670.4) 32.86 (834.6) 6.46 (164.2) 24.5%
Width inches (mm) 8.66 (220) 10.43 (265) 1.77 (45) 20.5%
Circum. inches (mm) 82.92 (2106.12) 103.23 (2621.97) 20.31 (515.85) 24.5%
Sidewall Height inches (mm) 5.2 (132) 7.93 (201.4) 2.73 (69.4) 52.6%
Revolutions per mile (km) 764.13 (474.81) 613.79 (381.39) -150.33 (-93.41) -19.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)24.9 mph (40.07 km/h)
25 mph (40.23 km/h)31.12 mph (50.09 km/h)
30 mph (48.28 km/h)37.35 mph (60.11 km/h)
35 mph (56.33 km/h)43.57 mph (70.12 km/h)
40 mph (64.37 km/h)49.8 mph (80.14 km/h)
45 mph (72.42 km/h)56.02 mph (90.16 km/h)
50 mph (80.47 km/h)62.25 mph (100.18 km/h)
55 mph (88.51 km/h)68.47 mph (110.19 km/h)
60 mph (96.56 km/h)74.7 mph (120.21 km/h)
65 mph (104.61 km/h)80.92 mph (130.23 km/h)
70 mph (112.65 km/h)87.14 mph (140.25 km/h)
75 mph (120.7 km/h)93.37 mph (150.26 km/h)
80 mph (128.75 km/h)99.59 mph (160.28 km/h)
85 mph (136.79 km/h)105.82 mph (170.3 km/h)
90 mph (144.84 km/h)112.04 mph (180.32 km/h)
95 mph (152.89 km/h)118.27 mph (190.33 km/h)
100 mph (160.93 km/h)124.49 mph (200.35 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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