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 230/60r16 Tire Comparison Side By Side
  220/60-16 230/60-16 Difference
Diameter inches (mm) 26.39 (670.4) 26.87 (682.4) 0.47 (12) 1.8%
Width inches (mm) 8.66 (220) 9.06 (230) 0.39 (10) 4.5%
Circum. inches (mm) 82.92 (2106.12) 84.4 (2143.82) 1.48 (37.7) 1.8%
Sidewall Height inches (mm) 5.2 (132) 5.43 (138) 0.24 (6) 4.5%
Revolutions per mile (km) 764.13 (474.81) 750.69 (466.46) -13.44 (-8.35) -1.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.36 mph (32.76 km/h)
25 mph (40.23 km/h)25.45 mph (40.95 km/h)
30 mph (48.28 km/h)30.54 mph (49.14 km/h)
35 mph (56.33 km/h)35.63 mph (57.34 km/h)
40 mph (64.37 km/h)40.72 mph (65.53 km/h)
45 mph (72.42 km/h)45.81 mph (73.72 km/h)
50 mph (80.47 km/h)50.89 mph (81.91 km/h)
55 mph (88.51 km/h)55.98 mph (90.1 km/h)
60 mph (96.56 km/h)61.07 mph (98.29 km/h)
65 mph (104.61 km/h)66.16 mph (106.48 km/h)
70 mph (112.65 km/h)71.25 mph (114.67 km/h)
75 mph (120.7 km/h)76.34 mph (122.86 km/h)
80 mph (128.75 km/h)81.43 mph (131.05 km/h)
85 mph (136.79 km/h)86.52 mph (139.24 km/h)
90 mph (144.84 km/h)91.61 mph (147.43 km/h)
95 mph (152.89 km/h)96.7 mph (155.62 km/h)
100 mph (160.93 km/h)101.79 mph (163.82 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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