Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/40r22 vs 265/65r22 Tire Comparison Side By Side
  265/40-22 265/65-22 Difference
Diameter inches (mm) 30.35 (770.8) 35.56 (903.3) 5.22 (132.5) 17.2%
Width inches (mm) 10.43 (265) 10.43 (265) 0 (0) 0%
Circum. inches (mm) 95.34 (2421.54) 111.72 (2837.8) 16.39 (416.26) 17.2%
Sidewall Height inches (mm) 4.17 (106) 6.78 (172.25) 2.61 (66.25) 62.5%
Revolutions per mile (km) 664.6 (412.96) 567.11 (352.38) -97.49 (-60.57) -14.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.44 mph (37.72 km/h)
25 mph (40.23 km/h)29.3 mph (47.15 km/h)
30 mph (48.28 km/h)35.16 mph (56.58 km/h)
35 mph (56.33 km/h)41.02 mph (66.01 km/h)
40 mph (64.37 km/h)46.88 mph (75.44 km/h)
45 mph (72.42 km/h)52.74 mph (84.87 km/h)
50 mph (80.47 km/h)58.59 mph (94.3 km/h)
55 mph (88.51 km/h)64.45 mph (103.73 km/h)
60 mph (96.56 km/h)70.31 mph (113.16 km/h)
65 mph (104.61 km/h)76.17 mph (122.59 km/h)
70 mph (112.65 km/h)82.03 mph (132.02 km/h)
75 mph (120.7 km/h)87.89 mph (141.45 km/h)
80 mph (128.75 km/h)93.75 mph (150.88 km/h)
85 mph (136.79 km/h)99.61 mph (160.31 km/h)
90 mph (144.84 km/h)105.47 mph (169.74 km/h)
95 mph (152.89 km/h)111.33 mph (179.17 km/h)
100 mph (160.93 km/h)117.19 mph (188.6 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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