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 275/70r22.5 Tire Comparison Side By Side
  265/75-22.5 275/70-22.5 Difference
Diameter inches (mm) 38.15 (969) 37.66 (956.5) -0.49 (-12.5) -1.3%
Width inches (mm) 10.43 (265) 10.83 (275) 0.39 (10) 3.8%
Circum. inches (mm) 119.85 (3044.2) 118.3 (3004.93) -1.55 (-39.27) -1.3%
Sidewall Height inches (mm) 7.82 (198.75) 7.58 (192.5) -0.25 (-6.25) -3.1%
Revolutions per mile (km) 528.66 (328.49) 535.57 (332.79) 6.91 (4.29) 1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.74 mph (31.77 km/h)
25 mph (40.23 km/h)24.68 mph (39.71 km/h)
30 mph (48.28 km/h)29.61 mph (47.66 km/h)
35 mph (56.33 km/h)34.55 mph (55.6 km/h)
40 mph (64.37 km/h)39.48 mph (63.54 km/h)
45 mph (72.42 km/h)44.42 mph (71.49 km/h)
50 mph (80.47 km/h)49.36 mph (79.43 km/h)
55 mph (88.51 km/h)54.29 mph (87.37 km/h)
60 mph (96.56 km/h)59.23 mph (95.32 km/h)
65 mph (104.61 km/h)64.16 mph (103.26 km/h)
70 mph (112.65 km/h)69.1 mph (111.2 km/h)
75 mph (120.7 km/h)74.03 mph (119.14 km/h)
80 mph (128.75 km/h)78.97 mph (127.09 km/h)
85 mph (136.79 km/h)83.9 mph (135.03 km/h)
90 mph (144.84 km/h)88.84 mph (142.97 km/h)
95 mph (152.89 km/h)93.77 mph (150.92 km/h)
100 mph (160.93 km/h)98.71 mph (158.86 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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