Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/70r22.5 vs 295/70r22.5 Tire Comparison Side By Side
  255/70-22.5 295/70-22.5 Difference
Diameter inches (mm) 36.56 (928.5) 38.76 (984.5) 2.2 (56) 6%
Width inches (mm) 10.04 (255) 11.61 (295) 1.57 (40) 15.7%
Circum. inches (mm) 114.84 (2916.97) 121.77 (3092.9) 6.93 (175.93) 6%
Sidewall Height inches (mm) 7.03 (178.5) 8.13 (206.5) 1.1 (28) 15.7%
Revolutions per mile (km) 551.72 (342.82) 520.34 (323.32) -31.38 (-19.5) -5.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.21 mph (34.13 km/h)
25 mph (40.23 km/h)26.51 mph (42.66 km/h)
30 mph (48.28 km/h)31.81 mph (51.19 km/h)
35 mph (56.33 km/h)37.11 mph (59.72 km/h)
40 mph (64.37 km/h)42.41 mph (68.26 km/h)
45 mph (72.42 km/h)47.71 mph (76.79 km/h)
50 mph (80.47 km/h)53.02 mph (85.32 km/h)
55 mph (88.51 km/h)58.32 mph (93.85 km/h)
60 mph (96.56 km/h)63.62 mph (102.38 km/h)
65 mph (104.61 km/h)68.92 mph (110.92 km/h)
70 mph (112.65 km/h)74.22 mph (119.45 km/h)
75 mph (120.7 km/h)79.52 mph (127.98 km/h)
80 mph (128.75 km/h)84.82 mph (136.51 km/h)
85 mph (136.79 km/h)90.13 mph (145.04 km/h)
90 mph (144.84 km/h)95.43 mph (153.58 km/h)
95 mph (152.89 km/h)100.73 mph (162.11 km/h)
100 mph (160.93 km/h)106.03 mph (170.64 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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