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 235/55r16 Tire Comparison Side By Side
  220/60-16 235/55-16 Difference
Diameter inches (mm) 26.39 (670.4) 26.18 (664.9) -0.22 (-5.5) -0.8%
Width inches (mm) 8.66 (220) 9.25 (235) 0.59 (15) 6.8%
Circum. inches (mm) 82.92 (2106.12) 82.24 (2088.84) -0.68 (-17.28) -0.8%
Sidewall Height inches (mm) 5.2 (132) 5.09 (129.25) -0.11 (-2.75) -2.1%
Revolutions per mile (km) 764.13 (474.81) 770.45 (478.73) 6.32 (3.93) 0.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.84 mph (31.92 km/h)
25 mph (40.23 km/h)24.79 mph (39.9 km/h)
30 mph (48.28 km/h)29.75 mph (47.88 km/h)
35 mph (56.33 km/h)34.71 mph (55.87 km/h)
40 mph (64.37 km/h)39.67 mph (63.85 km/h)
45 mph (72.42 km/h)44.63 mph (71.83 km/h)
50 mph (80.47 km/h)49.59 mph (79.81 km/h)
55 mph (88.51 km/h)54.55 mph (87.79 km/h)
60 mph (96.56 km/h)59.51 mph (95.77 km/h)
65 mph (104.61 km/h)64.47 mph (103.75 km/h)
70 mph (112.65 km/h)69.43 mph (111.73 km/h)
75 mph (120.7 km/h)74.38 mph (119.71 km/h)
80 mph (128.75 km/h)79.34 mph (127.69 km/h)
85 mph (136.79 km/h)84.3 mph (135.67 km/h)
90 mph (144.84 km/h)89.26 mph (143.65 km/h)
95 mph (152.89 km/h)94.22 mph (151.63 km/h)
100 mph (160.93 km/h)99.18 mph (159.61 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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