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 220/65r16 Tire Comparison Side By Side
  220/60-16 220/65-16 Difference
Diameter inches (mm) 26.39 (670.4) 27.26 (692.4) 0.87 (22) 3.3%
Width inches (mm) 8.66 (220) 8.66 (220) 0 (0) 0%
Circum. inches (mm) 82.92 (2106.12) 85.64 (2175.24) 2.72 (69.12) 3.3%
Sidewall Height inches (mm) 5.2 (132) 5.63 (143) 0.43 (11) 8.3%
Revolutions per mile (km) 764.13 (474.81) 739.85 (459.72) -24.28 (-15.09) -3.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.66 mph (33.24 km/h)
25 mph (40.23 km/h)25.82 mph (41.55 km/h)
30 mph (48.28 km/h)30.98 mph (49.86 km/h)
35 mph (56.33 km/h)36.15 mph (58.18 km/h)
40 mph (64.37 km/h)41.31 mph (66.49 km/h)
45 mph (72.42 km/h)46.48 mph (74.8 km/h)
50 mph (80.47 km/h)51.64 mph (83.11 km/h)
55 mph (88.51 km/h)56.8 mph (91.42 km/h)
60 mph (96.56 km/h)61.97 mph (99.73 km/h)
65 mph (104.61 km/h)67.13 mph (108.04 km/h)
70 mph (112.65 km/h)72.3 mph (116.35 km/h)
75 mph (120.7 km/h)77.46 mph (124.66 km/h)
80 mph (128.75 km/h)82.63 mph (132.97 km/h)
85 mph (136.79 km/h)87.79 mph (141.28 km/h)
90 mph (144.84 km/h)92.95 mph (149.59 km/h)
95 mph (152.89 km/h)98.12 mph (157.91 km/h)
100 mph (160.93 km/h)103.28 mph (166.22 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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