Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
33/12r16 vs 286/75r17 Tire Comparison Side By Side
  33/12-16 286/75-17 Difference
Diameter inches (mm) 33.05 (839.5) 33.89 (860.8) 0.84 (21.3) 2.5%
Width inches (mm) 12.01 (305) 11.26 (286) -0.75 (-19) -6.2%
Circum. inches (mm) 103.83 (2637.37) 106.47 (2704.28) 2.63 (66.92) 2.5%
Sidewall Height inches (mm) 8.53 (216.55) 8.44 (214.5) -0.08 (-2.05) -0.9%
Revolutions per mile (km) 610.21 (379.17) 595.11 (369.78) -15.1 (-9.38) -2.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.51 mph (33 km/h)
25 mph (40.23 km/h)25.63 mph (41.25 km/h)
30 mph (48.28 km/h)30.76 mph (49.51 km/h)
35 mph (56.33 km/h)35.89 mph (57.76 km/h)
40 mph (64.37 km/h)41.01 mph (66.01 km/h)
45 mph (72.42 km/h)46.14 mph (74.26 km/h)
50 mph (80.47 km/h)51.27 mph (82.51 km/h)
55 mph (88.51 km/h)56.4 mph (90.76 km/h)
60 mph (96.56 km/h)61.52 mph (99.01 km/h)
65 mph (104.61 km/h)66.65 mph (107.26 km/h)
70 mph (112.65 km/h)71.78 mph (115.51 km/h)
75 mph (120.7 km/h)76.9 mph (123.76 km/h)
80 mph (128.75 km/h)82.03 mph (132.01 km/h)
85 mph (136.79 km/h)87.16 mph (140.27 km/h)
90 mph (144.84 km/h)92.28 mph (148.52 km/h)
95 mph (152.89 km/h)97.41 mph (156.77 km/h)
100 mph (160.93 km/h)102.54 mph (165.02 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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