Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/55r17 vs 265/70r17 Tire Comparison Side By Side
  275/55-17 265/70-17 Difference
Diameter inches (mm) 28.91 (734.3) 31.61 (802.8) 2.7 (68.5) 9.3%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 90.82 (2306.87) 99.29 (2522.07) 8.47 (215.2) 9.3%
Sidewall Height inches (mm) 5.95 (151.25) 7.3 (185.5) 1.35 (34.25) 22.6%
Revolutions per mile (km) 697.63 (433.49) 638.1 (396.5) -59.53 (-36.99) -8.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.87 mph (35.19 km/h)
25 mph (40.23 km/h)27.33 mph (43.99 km/h)
30 mph (48.28 km/h)32.8 mph (52.78 km/h)
35 mph (56.33 km/h)38.27 mph (61.58 km/h)
40 mph (64.37 km/h)43.73 mph (70.38 km/h)
45 mph (72.42 km/h)49.2 mph (79.18 km/h)
50 mph (80.47 km/h)54.66 mph (87.97 km/h)
55 mph (88.51 km/h)60.13 mph (96.77 km/h)
60 mph (96.56 km/h)65.6 mph (105.57 km/h)
65 mph (104.61 km/h)71.06 mph (114.37 km/h)
70 mph (112.65 km/h)76.53 mph (123.16 km/h)
75 mph (120.7 km/h)82 mph (131.96 km/h)
80 mph (128.75 km/h)87.46 mph (140.76 km/h)
85 mph (136.79 km/h)92.93 mph (149.56 km/h)
90 mph (144.84 km/h)98.4 mph (158.35 km/h)
95 mph (152.89 km/h)103.86 mph (167.15 km/h)
100 mph (160.93 km/h)109.33 mph (175.95 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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