Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/70r22.5 vs 265/75r22.5 Tire Comparison Side By Side
  275/70-22.5 265/75-22.5 Difference
Diameter inches (mm) 37.66 (956.5) 38.15 (969) 0.49 (12.5) 1.3%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 118.3 (3004.93) 119.85 (3044.2) 1.55 (39.27) 1.3%
Sidewall Height inches (mm) 7.58 (192.5) 7.82 (198.75) 0.25 (6.25) 3.2%
Revolutions per mile (km) 535.57 (332.79) 528.66 (328.49) -6.91 (-4.29) -1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.26 mph (32.61 km/h)
25 mph (40.23 km/h)25.33 mph (40.76 km/h)
30 mph (48.28 km/h)30.39 mph (48.91 km/h)
35 mph (56.33 km/h)35.46 mph (57.06 km/h)
40 mph (64.37 km/h)40.52 mph (65.22 km/h)
45 mph (72.42 km/h)45.59 mph (73.37 km/h)
50 mph (80.47 km/h)50.65 mph (81.52 km/h)
55 mph (88.51 km/h)55.72 mph (89.67 km/h)
60 mph (96.56 km/h)60.78 mph (97.82 km/h)
65 mph (104.61 km/h)65.85 mph (105.97 km/h)
70 mph (112.65 km/h)70.91 mph (114.13 km/h)
75 mph (120.7 km/h)75.98 mph (122.28 km/h)
80 mph (128.75 km/h)81.05 mph (130.43 km/h)
85 mph (136.79 km/h)86.11 mph (138.58 km/h)
90 mph (144.84 km/h)91.18 mph (146.73 km/h)
95 mph (152.89 km/h)96.24 mph (154.89 km/h)
100 mph (160.93 km/h)101.31 mph (163.04 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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