Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/60r17 vs 265/70r17 Tire Comparison Side By Side
  275/60-17 265/70-17 Difference
Diameter inches (mm) 29.99 (761.8) 31.61 (802.8) 1.61 (41) 5.4%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 94.22 (2393.27) 99.29 (2522.07) 5.07 (128.81) 5.4%
Sidewall Height inches (mm) 6.5 (165) 7.3 (185.5) 0.81 (20.5) 12.4%
Revolutions per mile (km) 672.45 (417.84) 638.1 (396.5) -34.34 (-21.34) -5.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.08 mph (33.92 km/h)
25 mph (40.23 km/h)26.35 mph (42.4 km/h)
30 mph (48.28 km/h)31.61 mph (50.88 km/h)
35 mph (56.33 km/h)36.88 mph (59.36 km/h)
40 mph (64.37 km/h)42.15 mph (67.84 km/h)
45 mph (72.42 km/h)47.42 mph (76.32 km/h)
50 mph (80.47 km/h)52.69 mph (84.8 km/h)
55 mph (88.51 km/h)57.96 mph (93.28 km/h)
60 mph (96.56 km/h)63.23 mph (101.76 km/h)
65 mph (104.61 km/h)68.5 mph (110.24 km/h)
70 mph (112.65 km/h)73.77 mph (118.72 km/h)
75 mph (120.7 km/h)79.04 mph (127.2 km/h)
80 mph (128.75 km/h)84.31 mph (135.68 km/h)
85 mph (136.79 km/h)89.57 mph (144.16 km/h)
90 mph (144.84 km/h)94.84 mph (152.64 km/h)
95 mph (152.89 km/h)100.11 mph (161.12 km/h)
100 mph (160.93 km/h)105.38 mph (169.6 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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