Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/75r16 vs 265/70r16 Tire Comparison Side By Side
  275/75-16 265/70-16 Difference
Diameter inches (mm) 32.24 (818.9) 30.61 (777.4) -1.63 (-41.5) -5.1%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 101.29 (2572.65) 96.15 (2442.27) -5.13 (-130.38) -5.1%
Sidewall Height inches (mm) 8.12 (206.25) 7.3 (185.5) -0.82 (-20.75) -10.1%
Revolutions per mile (km) 625.56 (388.7) 658.95 (409.45) 33.39 (20.75) 5.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.99 mph (30.56 km/h)
25 mph (40.23 km/h)23.73 mph (38.19 km/h)
30 mph (48.28 km/h)28.48 mph (45.83 km/h)
35 mph (56.33 km/h)33.23 mph (53.47 km/h)
40 mph (64.37 km/h)37.97 mph (61.11 km/h)
45 mph (72.42 km/h)42.72 mph (68.75 km/h)
50 mph (80.47 km/h)47.47 mph (76.39 km/h)
55 mph (88.51 km/h)52.21 mph (84.03 km/h)
60 mph (96.56 km/h)56.96 mph (91.67 km/h)
65 mph (104.61 km/h)61.71 mph (99.31 km/h)
70 mph (112.65 km/h)66.45 mph (106.95 km/h)
75 mph (120.7 km/h)71.2 mph (114.58 km/h)
80 mph (128.75 km/h)75.95 mph (122.22 km/h)
85 mph (136.79 km/h)80.69 mph (129.86 km/h)
90 mph (144.84 km/h)85.44 mph (137.5 km/h)
95 mph (152.89 km/h)90.19 mph (145.14 km/h)
100 mph (160.93 km/h)94.93 mph (152.78 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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