Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/35r17 vs 205/50r17 Tire Comparison Side By Side
  215/35-17 205/50-17 Difference
Diameter inches (mm) 22.93 (582.3) 25.07 (636.8) 2.15 (54.5) 9.4%
Width inches (mm) 8.46 (215) 8.07 (205) -0.39 (-10) -4.7%
Circum. inches (mm) 72.02 (1829.35) 78.76 (2000.57) 6.74 (171.22) 9.4%
Sidewall Height inches (mm) 2.96 (75.25) 4.04 (102.5) 1.07 (27.25) 36.2%
Revolutions per mile (km) 879.74 (546.64) 804.44 (499.86) -75.29 (-46.78) -8.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.87 mph (35.2 km/h)
25 mph (40.23 km/h)27.34 mph (44 km/h)
30 mph (48.28 km/h)32.81 mph (52.8 km/h)
35 mph (56.33 km/h)38.28 mph (61.6 km/h)
40 mph (64.37 km/h)43.74 mph (70.4 km/h)
45 mph (72.42 km/h)49.21 mph (79.2 km/h)
50 mph (80.47 km/h)54.68 mph (88 km/h)
55 mph (88.51 km/h)60.15 mph (96.8 km/h)
60 mph (96.56 km/h)65.62 mph (105.6 km/h)
65 mph (104.61 km/h)71.08 mph (114.4 km/h)
70 mph (112.65 km/h)76.55 mph (123.2 km/h)
75 mph (120.7 km/h)82.02 mph (132 km/h)
80 mph (128.75 km/h)87.49 mph (140.8 km/h)
85 mph (136.79 km/h)92.96 mph (149.6 km/h)
90 mph (144.84 km/h)98.42 mph (158.4 km/h)
95 mph (152.89 km/h)103.89 mph (167.2 km/h)
100 mph (160.93 km/h)109.36 mph (176 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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