Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/80r17 vs 265/95r17 Tire Comparison Side By Side
  135/80-17 265/95-17 Difference
Diameter inches (mm) 25.5 (647.8) 36.82 (935.3) 11.32 (287.5) 44.4%
Width inches (mm) 5.31 (135) 10.43 (265) 5.12 (130) 96.3%
Circum. inches (mm) 80.12 (2035.12) 115.68 (2938.33) 35.56 (903.21) 44.4%
Sidewall Height inches (mm) 4.25 (108) 9.91 (251.75) 5.66 (143.75) 133.1%
Revolutions per mile (km) 790.78 (491.37) 547.71 (340.33) -243.08 (-151.04) -30.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)28.88 mph (46.47 km/h)
25 mph (40.23 km/h)36.1 mph (58.09 km/h)
30 mph (48.28 km/h)43.31 mph (69.71 km/h)
35 mph (56.33 km/h)50.53 mph (81.33 km/h)
40 mph (64.37 km/h)57.75 mph (92.94 km/h)
45 mph (72.42 km/h)64.97 mph (104.56 km/h)
50 mph (80.47 km/h)72.19 mph (116.18 km/h)
55 mph (88.51 km/h)79.41 mph (127.8 km/h)
60 mph (96.56 km/h)86.63 mph (139.42 km/h)
65 mph (104.61 km/h)93.85 mph (151.03 km/h)
70 mph (112.65 km/h)101.07 mph (162.65 km/h)
75 mph (120.7 km/h)108.29 mph (174.27 km/h)
80 mph (128.75 km/h)115.5 mph (185.89 km/h)
85 mph (136.79 km/h)122.72 mph (197.51 km/h)
90 mph (144.84 km/h)129.94 mph (209.12 km/h)
95 mph (152.89 km/h)137.16 mph (220.74 km/h)
100 mph (160.93 km/h)144.38 mph (232.36 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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