Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/65r15 vs 295/50r15 Tire Comparison Side By Side
  275/65-15 295/50-15 Difference
Diameter inches (mm) 29.07 (738.5) 26.61 (676) -2.46 (-62.5) -8.5%
Width inches (mm) 10.83 (275) 11.61 (295) 0.79 (20) 7.3%
Circum. inches (mm) 91.34 (2320.07) 83.61 (2123.72) -7.73 (-196.35) -8.5%
Sidewall Height inches (mm) 7.04 (178.75) 5.81 (147.5) -1.23 (-31.25) -17.5%
Revolutions per mile (km) 693.66 (431.02) 757.8 (470.87) 64.13 (39.85) 9.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.31 mph (29.46 km/h)
25 mph (40.23 km/h)22.88 mph (36.83 km/h)
30 mph (48.28 km/h)27.46 mph (44.19 km/h)
35 mph (56.33 km/h)32.04 mph (51.56 km/h)
40 mph (64.37 km/h)36.61 mph (58.93 km/h)
45 mph (72.42 km/h)41.19 mph (66.29 km/h)
50 mph (80.47 km/h)45.77 mph (73.66 km/h)
55 mph (88.51 km/h)50.35 mph (81.02 km/h)
60 mph (96.56 km/h)54.92 mph (88.39 km/h)
65 mph (104.61 km/h)59.5 mph (95.75 km/h)
70 mph (112.65 km/h)64.08 mph (103.12 km/h)
75 mph (120.7 km/h)68.65 mph (110.49 km/h)
80 mph (128.75 km/h)73.23 mph (117.85 km/h)
85 mph (136.79 km/h)77.81 mph (125.22 km/h)
90 mph (144.84 km/h)82.38 mph (132.58 km/h)
95 mph (152.89 km/h)86.96 mph (139.95 km/h)
100 mph (160.93 km/h)91.54 mph (147.31 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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