Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/35r17 vs 265/35r17 Tire Comparison Side By Side
  275/35-17 265/35-17 Difference
Diameter inches (mm) 24.58 (624.3) 24.3 (617.3) -0.28 (-7) -1.1%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 77.22 (1961.3) 76.35 (1939.31) -0.87 (-21.99) -1.1%
Sidewall Height inches (mm) 3.79 (96.25) 3.65 (92.75) -0.14 (-3.5) -3.6%
Revolutions per mile (km) 820.55 (509.87) 829.86 (515.65) 9.3 (5.78) 1.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.78 mph (31.83 km/h)
25 mph (40.23 km/h)24.72 mph (39.78 km/h)
30 mph (48.28 km/h)29.66 mph (47.74 km/h)
35 mph (56.33 km/h)34.61 mph (55.7 km/h)
40 mph (64.37 km/h)39.55 mph (63.65 km/h)
45 mph (72.42 km/h)44.5 mph (71.61 km/h)
50 mph (80.47 km/h)49.44 mph (79.57 km/h)
55 mph (88.51 km/h)54.38 mph (87.52 km/h)
60 mph (96.56 km/h)59.33 mph (95.48 km/h)
65 mph (104.61 km/h)64.27 mph (103.43 km/h)
70 mph (112.65 km/h)69.22 mph (111.39 km/h)
75 mph (120.7 km/h)74.16 mph (119.35 km/h)
80 mph (128.75 km/h)79.1 mph (127.3 km/h)
85 mph (136.79 km/h)84.05 mph (135.26 km/h)
90 mph (144.84 km/h)88.99 mph (143.22 km/h)
95 mph (152.89 km/h)93.93 mph (151.17 km/h)
100 mph (160.93 km/h)98.88 mph (159.13 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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