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 295/40r22 Tire Comparison Side By Side
  295/25-20 295/40-22 Difference
Diameter inches (mm) 25.81 (655.5) 31.29 (794.8) 5.48 (139.3) 21.3%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 81.08 (2059.31) 98.3 (2496.94) 17.23 (437.62) 21.3%
Sidewall Height inches (mm) 2.9 (73.75) 4.65 (118) 1.74 (44.25) 60%
Revolutions per mile (km) 781.5 (485.6) 644.53 (400.49) -136.97 (-85.11) -17.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)24.25 mph (39.03 km/h)
25 mph (40.23 km/h)30.31 mph (48.78 km/h)
30 mph (48.28 km/h)36.38 mph (58.54 km/h)
35 mph (56.33 km/h)42.44 mph (68.3 km/h)
40 mph (64.37 km/h)48.5 mph (78.05 km/h)
45 mph (72.42 km/h)54.56 mph (87.81 km/h)
50 mph (80.47 km/h)60.63 mph (97.57 km/h)
55 mph (88.51 km/h)66.69 mph (107.32 km/h)
60 mph (96.56 km/h)72.75 mph (117.08 km/h)
65 mph (104.61 km/h)78.81 mph (126.84 km/h)
70 mph (112.65 km/h)84.88 mph (136.59 km/h)
75 mph (120.7 km/h)90.94 mph (146.35 km/h)
80 mph (128.75 km/h)97 mph (156.11 km/h)
85 mph (136.79 km/h)103.06 mph (165.86 km/h)
90 mph (144.84 km/h)109.13 mph (175.62 km/h)
95 mph (152.89 km/h)115.19 mph (185.38 km/h)
100 mph (160.93 km/h)121.25 mph (195.13 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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