Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/25r22 vs 31/10.5r22 Tire Comparison Side By Side
  275/25-22 31/10.5-22 Difference
Diameter inches (mm) 27.41 (696.3) 31.04 (788.42) 3.63 (92.12) 13.2%
Width inches (mm) 10.83 (275) 10.51 (267) -0.31 (-8) -2.9%
Circum. inches (mm) 86.12 (2187.49) 97.52 (2476.89) 11.39 (289.4) 13.2%
Sidewall Height inches (mm) 2.71 (68.75) 4.52 (114.81) 1.81 (46.06) 67%
Revolutions per mile (km) 735.7 (457.14) 649.74 (403.73) -85.96 (-53.41) -11.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.65 mph (36.45 km/h)
25 mph (40.23 km/h)28.31 mph (45.56 km/h)
30 mph (48.28 km/h)33.97 mph (54.67 km/h)
35 mph (56.33 km/h)39.63 mph (63.78 km/h)
40 mph (64.37 km/h)45.29 mph (72.89 km/h)
45 mph (72.42 km/h)50.95 mph (82 km/h)
50 mph (80.47 km/h)56.61 mph (91.11 km/h)
55 mph (88.51 km/h)62.28 mph (100.22 km/h)
60 mph (96.56 km/h)67.94 mph (109.34 km/h)
65 mph (104.61 km/h)73.6 mph (118.45 km/h)
70 mph (112.65 km/h)79.26 mph (127.56 km/h)
75 mph (120.7 km/h)84.92 mph (136.67 km/h)
80 mph (128.75 km/h)90.58 mph (145.78 km/h)
85 mph (136.79 km/h)96.25 mph (154.89 km/h)
90 mph (144.84 km/h)101.91 mph (164 km/h)
95 mph (152.89 km/h)107.57 mph (173.11 km/h)
100 mph (160.93 km/h)113.23 mph (182.23 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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