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 265/65r17 Tire Comparison Side By Side
  275/60-17 265/65-17 Difference
Diameter inches (mm) 29.99 (761.8) 30.56 (776.3) 0.57 (14.5) 1.9%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 94.22 (2393.27) 96.02 (2438.82) 1.79 (45.55) 1.9%
Sidewall Height inches (mm) 6.5 (165) 6.78 (172.25) 0.29 (7.25) 4.4%
Revolutions per mile (km) 672.45 (417.84) 659.89 (410.03) -12.56 (-7.8) -1.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.38 mph (32.8 km/h)
25 mph (40.23 km/h)25.48 mph (41 km/h)
30 mph (48.28 km/h)30.57 mph (49.2 km/h)
35 mph (56.33 km/h)35.67 mph (57.4 km/h)
40 mph (64.37 km/h)40.76 mph (65.6 km/h)
45 mph (72.42 km/h)45.86 mph (73.8 km/h)
50 mph (80.47 km/h)50.95 mph (82 km/h)
55 mph (88.51 km/h)56.05 mph (90.2 km/h)
60 mph (96.56 km/h)61.14 mph (98.4 km/h)
65 mph (104.61 km/h)66.24 mph (106.6 km/h)
70 mph (112.65 km/h)71.33 mph (114.8 km/h)
75 mph (120.7 km/h)76.43 mph (123 km/h)
80 mph (128.75 km/h)81.52 mph (131.2 km/h)
85 mph (136.79 km/h)86.62 mph (139.4 km/h)
90 mph (144.84 km/h)91.71 mph (147.6 km/h)
95 mph (152.89 km/h)96.81 mph (155.8 km/h)
100 mph (160.93 km/h)101.9 mph (164 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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