Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/55r16 vs 165/35r17 Tire Comparison Side By Side
  165/55-16 165/35-17 Difference
Diameter inches (mm) 23.15 (587.9) 21.55 (547.3) -1.6 (-40.6) -6.9%
Width inches (mm) 6.5 (165) 6.5 (165) 0 (0) 0%
Circum. inches (mm) 72.71 (1846.94) 67.69 (1719.39) -5.02 (-127.55) -6.9%
Sidewall Height inches (mm) 3.57 (90.75) 2.27 (57.75) -1.3 (-33) -36.4%
Revolutions per mile (km) 871.36 (541.43) 936 (581.6) 64.64 (40.16) 7.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.62 mph (29.96 km/h)
25 mph (40.23 km/h)23.27 mph (37.46 km/h)
30 mph (48.28 km/h)27.93 mph (44.95 km/h)
35 mph (56.33 km/h)32.58 mph (52.44 km/h)
40 mph (64.37 km/h)37.24 mph (59.93 km/h)
45 mph (72.42 km/h)41.89 mph (67.42 km/h)
50 mph (80.47 km/h)46.55 mph (74.91 km/h)
55 mph (88.51 km/h)51.2 mph (82.4 km/h)
60 mph (96.56 km/h)55.86 mph (89.89 km/h)
65 mph (104.61 km/h)60.51 mph (97.38 km/h)
70 mph (112.65 km/h)65.17 mph (104.87 km/h)
75 mph (120.7 km/h)69.82 mph (112.37 km/h)
80 mph (128.75 km/h)74.48 mph (119.86 km/h)
85 mph (136.79 km/h)79.13 mph (127.35 km/h)
90 mph (144.84 km/h)83.78 mph (134.84 km/h)
95 mph (152.89 km/h)88.44 mph (142.33 km/h)
100 mph (160.93 km/h)93.09 mph (149.82 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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