Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/50r15 vs 255/60r15 Tire Comparison Side By Side
  295/50-15 255/60-15 Difference
Diameter inches (mm) 26.61 (676) 27.05 (687) 0.43 (11) 1.6%
Width inches (mm) 11.61 (295) 10.04 (255) -1.57 (-40) -13.6%
Circum. inches (mm) 83.61 (2123.72) 84.97 (2158.27) 1.36 (34.56) 1.6%
Sidewall Height inches (mm) 5.81 (147.5) 6.02 (153) 0.22 (5.5) 3.7%
Revolutions per mile (km) 757.8 (470.87) 745.66 (463.33) -12.13 (-7.54) -1.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.33 mph (32.71 km/h)
25 mph (40.23 km/h)25.41 mph (40.89 km/h)
30 mph (48.28 km/h)30.49 mph (49.07 km/h)
35 mph (56.33 km/h)35.57 mph (57.24 km/h)
40 mph (64.37 km/h)40.65 mph (65.42 km/h)
45 mph (72.42 km/h)45.73 mph (73.6 km/h)
50 mph (80.47 km/h)50.81 mph (81.78 km/h)
55 mph (88.51 km/h)55.89 mph (89.95 km/h)
60 mph (96.56 km/h)60.98 mph (98.13 km/h)
65 mph (104.61 km/h)66.06 mph (106.31 km/h)
70 mph (112.65 km/h)71.14 mph (114.49 km/h)
75 mph (120.7 km/h)76.22 mph (122.67 km/h)
80 mph (128.75 km/h)81.3 mph (130.84 km/h)
85 mph (136.79 km/h)86.38 mph (139.02 km/h)
90 mph (144.84 km/h)91.46 mph (147.2 km/h)
95 mph (152.89 km/h)96.55 mph (155.38 km/h)
100 mph (160.93 km/h)101.63 mph (163.55 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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