Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/60r16 vs 245/60r16 Tire Comparison Side By Side
  275/60-16 245/60-16 Difference
Diameter inches (mm) 28.99 (736.4) 27.57 (700.4) -1.42 (-36) -4.9%
Width inches (mm) 10.83 (275) 9.65 (245) -1.18 (-30) -10.9%
Circum. inches (mm) 91.08 (2313.47) 86.63 (2200.37) -4.45 (-113.1) -4.9%
Sidewall Height inches (mm) 6.5 (165) 5.79 (147) -0.71 (-18) -10.9%
Revolutions per mile (km) 695.64 (432.25) 731.4 (454.47) 35.76 (22.22) 5.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.02 mph (30.61 km/h)
25 mph (40.23 km/h)23.78 mph (38.27 km/h)
30 mph (48.28 km/h)28.53 mph (45.92 km/h)
35 mph (56.33 km/h)33.29 mph (53.57 km/h)
40 mph (64.37 km/h)38.04 mph (61.23 km/h)
45 mph (72.42 km/h)42.8 mph (68.88 km/h)
50 mph (80.47 km/h)47.56 mph (76.53 km/h)
55 mph (88.51 km/h)52.31 mph (84.19 km/h)
60 mph (96.56 km/h)57.07 mph (91.84 km/h)
65 mph (104.61 km/h)61.82 mph (99.49 km/h)
70 mph (112.65 km/h)66.58 mph (107.15 km/h)
75 mph (120.7 km/h)71.33 mph (114.8 km/h)
80 mph (128.75 km/h)76.09 mph (122.45 km/h)
85 mph (136.79 km/h)80.84 mph (130.11 km/h)
90 mph (144.84 km/h)85.6 mph (137.76 km/h)
95 mph (152.89 km/h)90.36 mph (145.41 km/h)
100 mph (160.93 km/h)95.11 mph (153.07 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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