Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/65r15 vs 285/60r15 Tire Comparison Side By Side
  295/65-15 285/60-15 Difference
Diameter inches (mm) 30.1 (764.5) 28.46 (723) -1.63 (-41.5) -5.4%
Width inches (mm) 11.61 (295) 11.22 (285) -0.39 (-10) -3.4%
Circum. inches (mm) 94.56 (2401.75) 89.42 (2271.37) -5.13 (-130.38) -5.4%
Sidewall Height inches (mm) 7.55 (191.75) 6.73 (171) -0.82 (-20.75) -10.8%
Revolutions per mile (km) 670.07 (416.36) 708.53 (440.26) 38.46 (23.9) 5.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.91 mph (30.44 km/h)
25 mph (40.23 km/h)23.64 mph (38.05 km/h)
30 mph (48.28 km/h)28.37 mph (45.66 km/h)
35 mph (56.33 km/h)33.1 mph (53.27 km/h)
40 mph (64.37 km/h)37.83 mph (60.88 km/h)
45 mph (72.42 km/h)42.56 mph (68.49 km/h)
50 mph (80.47 km/h)47.29 mph (76.1 km/h)
55 mph (88.51 km/h)52.01 mph (83.71 km/h)
60 mph (96.56 km/h)56.74 mph (91.32 km/h)
65 mph (104.61 km/h)61.47 mph (98.93 km/h)
70 mph (112.65 km/h)66.2 mph (106.54 km/h)
75 mph (120.7 km/h)70.93 mph (114.15 km/h)
80 mph (128.75 km/h)75.66 mph (121.76 km/h)
85 mph (136.79 km/h)80.39 mph (129.37 km/h)
90 mph (144.84 km/h)85.11 mph (136.98 km/h)
95 mph (152.89 km/h)89.84 mph (144.59 km/h)
100 mph (160.93 km/h)94.57 mph (152.2 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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