Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/35r17 vs 225/50r17 Tire Comparison Side By Side
  225/35-17 225/50-17 Difference
Diameter inches (mm) 23.2 (589.3) 25.86 (656.8) 2.66 (67.5) 11.5%
Width inches (mm) 8.86 (225) 8.86 (225) 0 (0) 0%
Circum. inches (mm) 72.89 (1851.34) 81.24 (2063.4) 8.35 (212.06) 11.5%
Sidewall Height inches (mm) 3.1 (78.75) 4.43 (112.5) 1.33 (33.75) 42.9%
Revolutions per mile (km) 869.29 (540.15) 779.95 (484.64) -89.34 (-55.51) -10.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.29 mph (35.87 km/h)
25 mph (40.23 km/h)27.86 mph (44.84 km/h)
30 mph (48.28 km/h)33.44 mph (53.81 km/h)
35 mph (56.33 km/h)39.01 mph (62.78 km/h)
40 mph (64.37 km/h)44.58 mph (71.75 km/h)
45 mph (72.42 km/h)50.15 mph (80.72 km/h)
50 mph (80.47 km/h)55.73 mph (89.68 km/h)
55 mph (88.51 km/h)61.3 mph (98.65 km/h)
60 mph (96.56 km/h)66.87 mph (107.62 km/h)
65 mph (104.61 km/h)72.45 mph (116.59 km/h)
70 mph (112.65 km/h)78.02 mph (125.56 km/h)
75 mph (120.7 km/h)83.59 mph (134.53 km/h)
80 mph (128.75 km/h)89.16 mph (143.49 km/h)
85 mph (136.79 km/h)94.74 mph (152.46 km/h)
90 mph (144.84 km/h)100.31 mph (161.43 km/h)
95 mph (152.89 km/h)105.88 mph (170.4 km/h)
100 mph (160.93 km/h)111.45 mph (179.37 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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