Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/75r22.5 vs 275/75r22.5 Tire Comparison Side By Side
  265/75-22.5 275/75-22.5 Difference
Diameter inches (mm) 38.15 (969) 38.74 (984) 0.59 (15) 1.5%
Width inches (mm) 10.43 (265) 10.83 (275) 0.39 (10) 3.8%
Circum. inches (mm) 119.85 (3044.2) 121.71 (3091.33) 1.86 (47.12) 1.5%
Sidewall Height inches (mm) 7.82 (198.75) 8.12 (206.25) 0.3 (7.5) 3.8%
Revolutions per mile (km) 528.66 (328.49) 520.6 (323.49) -8.06 (-5.01) -1.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.31 mph (32.69 km/h)
25 mph (40.23 km/h)25.39 mph (40.86 km/h)
30 mph (48.28 km/h)30.46 mph (49.03 km/h)
35 mph (56.33 km/h)35.54 mph (57.2 km/h)
40 mph (64.37 km/h)40.62 mph (65.37 km/h)
45 mph (72.42 km/h)45.7 mph (73.54 km/h)
50 mph (80.47 km/h)50.77 mph (81.71 km/h)
55 mph (88.51 km/h)55.85 mph (89.88 km/h)
60 mph (96.56 km/h)60.93 mph (98.06 km/h)
65 mph (104.61 km/h)66.01 mph (106.23 km/h)
70 mph (112.65 km/h)71.08 mph (114.4 km/h)
75 mph (120.7 km/h)76.16 mph (122.57 km/h)
80 mph (128.75 km/h)81.24 mph (130.74 km/h)
85 mph (136.79 km/h)86.32 mph (138.91 km/h)
90 mph (144.84 km/h)91.39 mph (147.08 km/h)
95 mph (152.89 km/h)96.47 mph (155.25 km/h)
100 mph (160.93 km/h)101.55 mph (163.43 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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