Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/60r15 vs 295/50r15 Tire Comparison Side By Side
  275/60-15 295/50-15 Difference
Diameter inches (mm) 27.99 (711) 26.61 (676) -1.38 (-35) -4.9%
Width inches (mm) 10.83 (275) 11.61 (295) 0.79 (20) 7.3%
Circum. inches (mm) 87.94 (2233.67) 83.61 (2123.72) -4.33 (-109.96) -4.9%
Sidewall Height inches (mm) 6.5 (165) 5.81 (147.5) -0.69 (-17.5) -10.6%
Revolutions per mile (km) 720.49 (447.69) 757.8 (470.87) 37.3 (23.18) 5.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.02 mph (30.6 km/h)
25 mph (40.23 km/h)23.77 mph (38.25 km/h)
30 mph (48.28 km/h)28.52 mph (45.9 km/h)
35 mph (56.33 km/h)33.28 mph (53.55 km/h)
40 mph (64.37 km/h)38.03 mph (61.2 km/h)
45 mph (72.42 km/h)42.78 mph (68.86 km/h)
50 mph (80.47 km/h)47.54 mph (76.51 km/h)
55 mph (88.51 km/h)52.29 mph (84.16 km/h)
60 mph (96.56 km/h)57.05 mph (91.81 km/h)
65 mph (104.61 km/h)61.8 mph (99.46 km/h)
70 mph (112.65 km/h)66.55 mph (107.11 km/h)
75 mph (120.7 km/h)71.31 mph (114.76 km/h)
80 mph (128.75 km/h)76.06 mph (122.41 km/h)
85 mph (136.79 km/h)80.82 mph (130.06 km/h)
90 mph (144.84 km/h)85.57 mph (137.71 km/h)
95 mph (152.89 km/h)90.32 mph (145.36 km/h)
100 mph (160.93 km/h)95.08 mph (153.01 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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