Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r20 vs 225/35r20 Tire Comparison Side By Side
  295/25-20 225/35-20 Difference
Diameter inches (mm) 25.81 (655.5) 26.2 (665.5) 0.39 (10) 1.5%
Width inches (mm) 11.61 (295) 8.86 (225) -2.76 (-70) -23.7%
Circum. inches (mm) 81.08 (2059.31) 82.31 (2090.73) 1.24 (31.42) 1.5%
Sidewall Height inches (mm) 2.9 (73.75) 3.1 (78.75) 0.2 (5) 6.8%
Revolutions per mile (km) 781.5 (485.6) 769.75 (478.3) -11.74 (-7.3) -1.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.31 mph (32.68 km/h)
25 mph (40.23 km/h)25.38 mph (40.85 km/h)
30 mph (48.28 km/h)30.46 mph (49.02 km/h)
35 mph (56.33 km/h)35.53 mph (57.19 km/h)
40 mph (64.37 km/h)40.61 mph (65.36 km/h)
45 mph (72.42 km/h)45.69 mph (73.53 km/h)
50 mph (80.47 km/h)50.76 mph (81.69 km/h)
55 mph (88.51 km/h)55.84 mph (89.86 km/h)
60 mph (96.56 km/h)60.92 mph (98.03 km/h)
65 mph (104.61 km/h)65.99 mph (106.2 km/h)
70 mph (112.65 km/h)71.07 mph (114.37 km/h)
75 mph (120.7 km/h)76.14 mph (122.54 km/h)
80 mph (128.75 km/h)81.22 mph (130.71 km/h)
85 mph (136.79 km/h)86.3 mph (138.88 km/h)
90 mph (144.84 km/h)91.37 mph (147.05 km/h)
95 mph (152.89 km/h)96.45 mph (155.22 km/h)
100 mph (160.93 km/h)101.53 mph (163.39 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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