Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/80r22.5 vs 295/80r22.5 Tire Comparison Side By Side
  255/80-22.5 295/80-22.5 Difference
Diameter inches (mm) 38.56 (979.5) 41.08 (1043.5) 2.52 (64) 6.5%
Width inches (mm) 10.04 (255) 11.61 (295) 1.57 (40) 15.7%
Circum. inches (mm) 121.15 (3077.19) 129.07 (3278.25) 7.92 (201.06) 6.5%
Sidewall Height inches (mm) 8.03 (204) 9.29 (236) 1.26 (32) 15.7%
Revolutions per mile (km) 522.99 (324.97) 490.92 (305.04) -32.08 (-19.93) -6.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.31 mph (34.29 km/h)
25 mph (40.23 km/h)26.63 mph (42.86 km/h)
30 mph (48.28 km/h)31.96 mph (51.44 km/h)
35 mph (56.33 km/h)37.29 mph (60.01 km/h)
40 mph (64.37 km/h)42.61 mph (68.58 km/h)
45 mph (72.42 km/h)47.94 mph (77.15 km/h)
50 mph (80.47 km/h)53.27 mph (85.73 km/h)
55 mph (88.51 km/h)58.59 mph (94.3 km/h)
60 mph (96.56 km/h)63.92 mph (102.87 km/h)
65 mph (104.61 km/h)69.25 mph (111.44 km/h)
70 mph (112.65 km/h)74.57 mph (120.02 km/h)
75 mph (120.7 km/h)79.9 mph (128.59 km/h)
80 mph (128.75 km/h)85.23 mph (137.16 km/h)
85 mph (136.79 km/h)90.55 mph (145.73 km/h)
90 mph (144.84 km/h)95.88 mph (154.31 km/h)
95 mph (152.89 km/h)101.21 mph (162.88 km/h)
100 mph (160.93 km/h)106.53 mph (171.45 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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