Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/60r16 vs 265/50r16 Tire Comparison Side By Side
  265/60-16 265/50-16 Difference
Diameter inches (mm) 28.52 (724.4) 26.43 (671.4) -2.09 (-53) -7.3%
Width inches (mm) 10.43 (265) 10.43 (265) 0 (0) 0%
Circum. inches (mm) 89.6 (2275.77) 83.04 (2109.27) -6.56 (-166.5) -7.3%
Sidewall Height inches (mm) 6.26 (159) 5.22 (132.5) -1.04 (-26.5) -16.7%
Revolutions per mile (km) 707.16 (439.41) 762.99 (474.1) 55.82 (34.69) 7.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.54 mph (29.83 km/h)
25 mph (40.23 km/h)23.17 mph (37.29 km/h)
30 mph (48.28 km/h)27.81 mph (44.75 km/h)
35 mph (56.33 km/h)32.44 mph (52.21 km/h)
40 mph (64.37 km/h)37.07 mph (59.66 km/h)
45 mph (72.42 km/h)41.71 mph (67.12 km/h)
50 mph (80.47 km/h)46.34 mph (74.58 km/h)
55 mph (88.51 km/h)50.98 mph (82.04 km/h)
60 mph (96.56 km/h)55.61 mph (89.5 km/h)
65 mph (104.61 km/h)60.24 mph (96.95 km/h)
70 mph (112.65 km/h)64.88 mph (104.41 km/h)
75 mph (120.7 km/h)69.51 mph (111.87 km/h)
80 mph (128.75 km/h)74.15 mph (119.33 km/h)
85 mph (136.79 km/h)78.78 mph (126.79 km/h)
90 mph (144.84 km/h)83.42 mph (134.24 km/h)
95 mph (152.89 km/h)88.05 mph (141.7 km/h)
100 mph (160.93 km/h)92.68 mph (149.16 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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