Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/75r16 vs 205/80r16 Tire Comparison Side By Side
  205/75-16 205/80-16 Difference
Diameter inches (mm) 28.11 (713.9) 28.91 (734.4) 0.81 (20.5) 2.9%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 88.3 (2242.78) 90.83 (2307.19) 2.54 (64.4) 2.9%
Sidewall Height inches (mm) 6.05 (153.75) 6.46 (164) 0.4 (10.25) 6.7%
Revolutions per mile (km) 717.57 (445.87) 697.54 (433.43) -20.03 (-12.45) -2.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.57 mph (33.11 km/h)
25 mph (40.23 km/h)25.72 mph (41.39 km/h)
30 mph (48.28 km/h)30.86 mph (49.67 km/h)
35 mph (56.33 km/h)36.01 mph (57.94 km/h)
40 mph (64.37 km/h)41.15 mph (66.22 km/h)
45 mph (72.42 km/h)46.29 mph (74.5 km/h)
50 mph (80.47 km/h)51.44 mph (82.78 km/h)
55 mph (88.51 km/h)56.58 mph (91.06 km/h)
60 mph (96.56 km/h)61.72 mph (99.33 km/h)
65 mph (104.61 km/h)66.87 mph (107.61 km/h)
70 mph (112.65 km/h)72.01 mph (115.89 km/h)
75 mph (120.7 km/h)77.15 mph (124.17 km/h)
80 mph (128.75 km/h)82.3 mph (132.44 km/h)
85 mph (136.79 km/h)87.44 mph (140.72 km/h)
90 mph (144.84 km/h)92.58 mph (149 km/h)
95 mph (152.89 km/h)97.73 mph (157.28 km/h)
100 mph (160.93 km/h)102.87 mph (165.56 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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