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 265/70r22.5 Tire Comparison Side By Side
  265/75-22.5 265/70-22.5 Difference
Diameter inches (mm) 38.15 (969) 37.11 (942.5) -1.04 (-26.5) -2.7%
Width inches (mm) 10.43 (265) 10.43 (265) 0 (0) 0%
Circum. inches (mm) 119.85 (3044.2) 116.57 (2960.95) -3.28 (-83.25) -2.7%
Sidewall Height inches (mm) 7.82 (198.75) 7.3 (185.5) -0.52 (-13.25) -6.7%
Revolutions per mile (km) 528.66 (328.49) 543.52 (337.73) 14.86 (9.24) 2.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.45 mph (31.31 km/h)
25 mph (40.23 km/h)24.32 mph (39.13 km/h)
30 mph (48.28 km/h)29.18 mph (46.96 km/h)
35 mph (56.33 km/h)34.04 mph (54.79 km/h)
40 mph (64.37 km/h)38.91 mph (62.61 km/h)
45 mph (72.42 km/h)43.77 mph (70.44 km/h)
50 mph (80.47 km/h)48.63 mph (78.27 km/h)
55 mph (88.51 km/h)53.5 mph (86.09 km/h)
60 mph (96.56 km/h)58.36 mph (93.92 km/h)
65 mph (104.61 km/h)63.22 mph (101.75 km/h)
70 mph (112.65 km/h)68.09 mph (109.57 km/h)
75 mph (120.7 km/h)72.95 mph (117.4 km/h)
80 mph (128.75 km/h)77.81 mph (125.23 km/h)
85 mph (136.79 km/h)82.68 mph (133.05 km/h)
90 mph (144.84 km/h)87.54 mph (140.88 km/h)
95 mph (152.89 km/h)92.4 mph (148.71 km/h)
100 mph (160.93 km/h)97.27 mph (156.53 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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