Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/75r17 vs 200/75r17 Tire Comparison Side By Side
  215/75-17 200/75-17 Difference
Diameter inches (mm) 29.7 (754.3) 28.81 (731.8) -0.89 (-22.5) -3%
Width inches (mm) 8.46 (215) 7.87 (200) -0.59 (-15) -7%
Circum. inches (mm) 93.3 (2369.7) 90.51 (2299.02) -2.78 (-70.69) -3%
Sidewall Height inches (mm) 6.35 (161.25) 5.91 (150) -0.44 (-11.25) -7%
Revolutions per mile (km) 679.13 (421.99) 700.01 (434.97) 20.88 (12.97) 3.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.4 mph (31.23 km/h)
25 mph (40.23 km/h)24.25 mph (39.03 km/h)
30 mph (48.28 km/h)29.11 mph (46.84 km/h)
35 mph (56.33 km/h)33.96 mph (54.65 km/h)
40 mph (64.37 km/h)38.81 mph (62.45 km/h)
45 mph (72.42 km/h)43.66 mph (70.26 km/h)
50 mph (80.47 km/h)48.51 mph (78.07 km/h)
55 mph (88.51 km/h)53.36 mph (85.87 km/h)
60 mph (96.56 km/h)58.21 mph (93.68 km/h)
65 mph (104.61 km/h)63.06 mph (101.49 km/h)
70 mph (112.65 km/h)67.91 mph (109.29 km/h)
75 mph (120.7 km/h)72.76 mph (117.1 km/h)
80 mph (128.75 km/h)77.61 mph (124.91 km/h)
85 mph (136.79 km/h)82.46 mph (132.71 km/h)
90 mph (144.84 km/h)87.32 mph (140.52 km/h)
95 mph (152.89 km/h)92.17 mph (148.33 km/h)
100 mph (160.93 km/h)97.02 mph (156.13 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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