Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/75r15 vs 295/50r15 Tire Comparison Side By Side
  295/75-15 295/50-15 Difference
Diameter inches (mm) 32.42 (823.5) 26.61 (676) -5.81 (-147.5) -17.9%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 101.85 (2587.1) 83.61 (2123.72) -18.24 (-463.38) -17.9%
Sidewall Height inches (mm) 8.71 (221.25) 5.81 (147.5) -2.9 (-73.75) -33.3%
Revolutions per mile (km) 622.06 (386.53) 757.8 (470.87) 135.73 (84.34) 21.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)16.42 mph (26.42 km/h)
25 mph (40.23 km/h)20.52 mph (33.03 km/h)
30 mph (48.28 km/h)24.63 mph (39.63 km/h)
35 mph (56.33 km/h)28.73 mph (46.24 km/h)
40 mph (64.37 km/h)32.84 mph (52.84 km/h)
45 mph (72.42 km/h)36.94 mph (59.45 km/h)
50 mph (80.47 km/h)41.04 mph (66.05 km/h)
55 mph (88.51 km/h)45.15 mph (72.66 km/h)
60 mph (96.56 km/h)49.25 mph (79.27 km/h)
65 mph (104.61 km/h)53.36 mph (85.87 km/h)
70 mph (112.65 km/h)57.46 mph (92.48 km/h)
75 mph (120.7 km/h)61.57 mph (99.08 km/h)
80 mph (128.75 km/h)65.67 mph (105.69 km/h)
85 mph (136.79 km/h)69.78 mph (112.29 km/h)
90 mph (144.84 km/h)73.88 mph (118.9 km/h)
95 mph (152.89 km/h)77.98 mph (125.5 km/h)
100 mph (160.93 km/h)82.09 mph (132.11 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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