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 230/65r16 Tire Comparison Side By Side
  220/60-16 230/65-16 Difference
Diameter inches (mm) 26.39 (670.4) 27.77 (705.4) 1.38 (35) 5.2%
Width inches (mm) 8.66 (220) 9.06 (230) 0.39 (10) 4.5%
Circum. inches (mm) 82.92 (2106.12) 87.25 (2216.08) 4.33 (109.96) 5.2%
Sidewall Height inches (mm) 5.2 (132) 5.89 (149.5) 0.69 (17.5) 13.3%
Revolutions per mile (km) 764.13 (474.81) 726.21 (451.25) -37.91 (-23.56) -5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.04 mph (33.87 km/h)
25 mph (40.23 km/h)26.31 mph (42.33 km/h)
30 mph (48.28 km/h)31.57 mph (50.8 km/h)
35 mph (56.33 km/h)36.83 mph (59.27 km/h)
40 mph (64.37 km/h)42.09 mph (67.73 km/h)
45 mph (72.42 km/h)47.35 mph (76.2 km/h)
50 mph (80.47 km/h)52.61 mph (84.67 km/h)
55 mph (88.51 km/h)57.87 mph (93.14 km/h)
60 mph (96.56 km/h)63.13 mph (101.6 km/h)
65 mph (104.61 km/h)68.39 mph (110.07 km/h)
70 mph (112.65 km/h)73.65 mph (118.54 km/h)
75 mph (120.7 km/h)78.92 mph (127 km/h)
80 mph (128.75 km/h)84.18 mph (135.47 km/h)
85 mph (136.79 km/h)89.44 mph (143.94 km/h)
90 mph (144.84 km/h)94.7 mph (152.4 km/h)
95 mph (152.89 km/h)99.96 mph (160.87 km/h)
100 mph (160.93 km/h)105.22 mph (169.34 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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