Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
200/50r17 vs 250/30r17 Tire Comparison Side By Side
  200/50-17 250/30-17 Difference
Diameter inches (mm) 24.87 (631.8) 22.91 (581.8) -1.97 (-50) -7.9%
Width inches (mm) 7.87 (200) 9.84 (250) 1.97 (50) 25%
Circum. inches (mm) 78.14 (1984.86) 71.96 (1827.78) -6.18 (-157.08) -7.9%
Sidewall Height inches (mm) 3.94 (100) 2.95 (75) -0.98 (-25) -25%
Revolutions per mile (km) 810.81 (503.81) 880.49 (547.11) 69.68 (43.3) 8.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.42 mph (29.64 km/h)
25 mph (40.23 km/h)23.02 mph (37.05 km/h)
30 mph (48.28 km/h)27.63 mph (44.46 km/h)
35 mph (56.33 km/h)32.23 mph (51.87 km/h)
40 mph (64.37 km/h)36.83 mph (59.28 km/h)
45 mph (72.42 km/h)41.44 mph (66.69 km/h)
50 mph (80.47 km/h)46.04 mph (74.1 km/h)
55 mph (88.51 km/h)50.65 mph (81.51 km/h)
60 mph (96.56 km/h)55.25 mph (88.92 km/h)
65 mph (104.61 km/h)59.86 mph (96.33 km/h)
70 mph (112.65 km/h)64.46 mph (103.74 km/h)
75 mph (120.7 km/h)69.06 mph (111.15 km/h)
80 mph (128.75 km/h)73.67 mph (118.56 km/h)
85 mph (136.79 km/h)78.27 mph (125.97 km/h)
90 mph (144.84 km/h)82.88 mph (133.38 km/h)
95 mph (152.89 km/h)87.48 mph (140.79 km/h)
100 mph (160.93 km/h)92.09 mph (148.2 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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