Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/90r17 vs 265/95r17 Tire Comparison Side By Side
  165/90-17 265/95-17 Difference
Diameter inches (mm) 28.69 (728.8) 36.82 (935.3) 8.13 (206.5) 28.3%
Width inches (mm) 6.5 (165) 10.43 (265) 3.94 (100) 60.6%
Circum. inches (mm) 90.14 (2289.59) 115.68 (2938.33) 25.54 (648.74) 28.3%
Sidewall Height inches (mm) 5.85 (148.5) 9.91 (251.75) 4.06 (103.25) 69.5%
Revolutions per mile (km) 702.9 (436.76) 547.71 (340.33) -155.19 (-96.43) -22.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)25.67 mph (41.31 km/h)
25 mph (40.23 km/h)32.08 mph (51.63 km/h)
30 mph (48.28 km/h)38.5 mph (61.96 km/h)
35 mph (56.33 km/h)44.92 mph (72.29 km/h)
40 mph (64.37 km/h)51.33 mph (82.61 km/h)
45 mph (72.42 km/h)57.75 mph (92.94 km/h)
50 mph (80.47 km/h)64.17 mph (103.27 km/h)
55 mph (88.51 km/h)70.58 mph (113.59 km/h)
60 mph (96.56 km/h)77 mph (123.92 km/h)
65 mph (104.61 km/h)83.42 mph (134.25 km/h)
70 mph (112.65 km/h)89.83 mph (144.57 km/h)
75 mph (120.7 km/h)96.25 mph (154.9 km/h)
80 mph (128.75 km/h)102.67 mph (165.23 km/h)
85 mph (136.79 km/h)109.08 mph (175.55 km/h)
90 mph (144.84 km/h)115.5 mph (185.88 km/h)
95 mph (152.89 km/h)121.92 mph (196.21 km/h)
100 mph (160.93 km/h)128.33 mph (206.53 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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