Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/45r16 vs 33/10.5r16 Tire Comparison Side By Side
  275/45-16 33/10.5-16 Difference
Diameter inches (mm) 25.74 (653.9) 33.03 (838.94) 7.29 (185.04) 28.3%
Width inches (mm) 10.83 (275) 10.51 (267) -0.31 (-8) -2.9%
Circum. inches (mm) 80.88 (2054.29) 103.76 (2635.61) 22.89 (581.32) 28.3%
Sidewall Height inches (mm) 4.87 (123.75) 8.51 (216.27) 3.64 (92.52) 74.8%
Revolutions per mile (km) 783.41 (486.79) 610.62 (379.42) -172.79 (-107.37) -22.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)25.66 mph (41.3 km/h)
25 mph (40.23 km/h)32.07 mph (51.62 km/h)
30 mph (48.28 km/h)38.49 mph (61.94 km/h)
35 mph (56.33 km/h)44.9 mph (72.27 km/h)
40 mph (64.37 km/h)51.32 mph (82.59 km/h)
45 mph (72.42 km/h)57.73 mph (92.91 km/h)
50 mph (80.47 km/h)64.15 mph (103.24 km/h)
55 mph (88.51 km/h)70.56 mph (113.56 km/h)
60 mph (96.56 km/h)76.98 mph (123.89 km/h)
65 mph (104.61 km/h)83.39 mph (134.21 km/h)
70 mph (112.65 km/h)89.81 mph (144.53 km/h)
75 mph (120.7 km/h)96.22 mph (154.86 km/h)
80 mph (128.75 km/h)102.64 mph (165.18 km/h)
85 mph (136.79 km/h)109.05 mph (175.5 km/h)
90 mph (144.84 km/h)115.47 mph (185.83 km/h)
95 mph (152.89 km/h)121.88 mph (196.15 km/h)
100 mph (160.93 km/h)128.3 mph (206.48 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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