Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/65r17 vs 275/60r17 Tire Comparison Side By Side
  265/65-17 275/60-17 Difference
Diameter inches (mm) 30.56 (776.3) 29.99 (761.8) -0.57 (-14.5) -1.9%
Width inches (mm) 10.43 (265) 10.83 (275) 0.39 (10) 3.8%
Circum. inches (mm) 96.02 (2438.82) 94.22 (2393.27) -1.79 (-45.55) -1.9%
Sidewall Height inches (mm) 6.78 (172.25) 6.5 (165) -0.29 (-7.25) -4.2%
Revolutions per mile (km) 659.89 (410.03) 672.45 (417.84) 12.56 (7.8) 1.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.63 mph (31.59 km/h)
25 mph (40.23 km/h)24.53 mph (39.48 km/h)
30 mph (48.28 km/h)29.44 mph (47.38 km/h)
35 mph (56.33 km/h)34.35 mph (55.28 km/h)
40 mph (64.37 km/h)39.25 mph (63.17 km/h)
45 mph (72.42 km/h)44.16 mph (71.07 km/h)
50 mph (80.47 km/h)49.07 mph (78.96 km/h)
55 mph (88.51 km/h)53.97 mph (86.86 km/h)
60 mph (96.56 km/h)58.88 mph (94.76 km/h)
65 mph (104.61 km/h)63.79 mph (102.65 km/h)
70 mph (112.65 km/h)68.69 mph (110.55 km/h)
75 mph (120.7 km/h)73.6 mph (118.45 km/h)
80 mph (128.75 km/h)78.51 mph (126.34 km/h)
85 mph (136.79 km/h)83.41 mph (134.24 km/h)
90 mph (144.84 km/h)88.32 mph (142.14 km/h)
95 mph (152.89 km/h)93.23 mph (150.03 km/h)
100 mph (160.93 km/h)98.13 mph (157.93 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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