Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/50r16 vs 215/45r17 Tire Comparison Side By Side
  205/50-16 215/45-17 Difference
Diameter inches (mm) 24.07 (611.4) 24.62 (625.3) 0.55 (13.9) 2.3%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 75.62 (1920.77) 77.34 (1964.44) 1.72 (43.67) 2.3%
Sidewall Height inches (mm) 4.04 (102.5) 3.81 (96.75) -0.23 (-5.75) -5.6%
Revolutions per mile (km) 837.86 (520.62) 819.24 (509.05) -18.63 (-11.57) -2.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.45 mph (32.92 km/h)
25 mph (40.23 km/h)25.57 mph (41.15 km/h)
30 mph (48.28 km/h)30.68 mph (49.38 km/h)
35 mph (56.33 km/h)35.8 mph (57.61 km/h)
40 mph (64.37 km/h)40.91 mph (65.84 km/h)
45 mph (72.42 km/h)46.02 mph (74.07 km/h)
50 mph (80.47 km/h)51.14 mph (82.3 km/h)
55 mph (88.51 km/h)56.25 mph (90.53 km/h)
60 mph (96.56 km/h)61.36 mph (98.76 km/h)
65 mph (104.61 km/h)66.48 mph (106.99 km/h)
70 mph (112.65 km/h)71.59 mph (115.22 km/h)
75 mph (120.7 km/h)76.71 mph (123.45 km/h)
80 mph (128.75 km/h)81.82 mph (131.67 km/h)
85 mph (136.79 km/h)86.93 mph (139.9 km/h)
90 mph (144.84 km/h)92.05 mph (148.13 km/h)
95 mph (152.89 km/h)97.16 mph (156.36 km/h)
100 mph (160.93 km/h)102.27 mph (164.59 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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