Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/80r22.5 vs 295/70r22.5 Tire Comparison Side By Side
  275/80-22.5 295/70-22.5 Difference
Diameter inches (mm) 39.82 (1011.5) 38.76 (984.5) -1.06 (-27) -2.7%
Width inches (mm) 10.83 (275) 11.61 (295) 0.79 (20) 7.3%
Circum. inches (mm) 125.11 (3177.72) 121.77 (3092.9) -3.34 (-84.82) -2.7%
Sidewall Height inches (mm) 8.66 (220) 8.13 (206.5) -0.53 (-13.5) -6.1%
Revolutions per mile (km) 506.45 (314.69) 520.34 (323.32) 13.89 (8.63) 2.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.47 mph (31.33 km/h)
25 mph (40.23 km/h)24.33 mph (39.16 km/h)
30 mph (48.28 km/h)29.2 mph (46.99 km/h)
35 mph (56.33 km/h)34.07 mph (54.82 km/h)
40 mph (64.37 km/h)38.93 mph (62.66 km/h)
45 mph (72.42 km/h)43.8 mph (70.49 km/h)
50 mph (80.47 km/h)48.67 mph (78.32 km/h)
55 mph (88.51 km/h)53.53 mph (86.15 km/h)
60 mph (96.56 km/h)58.4 mph (93.98 km/h)
65 mph (104.61 km/h)63.26 mph (101.82 km/h)
70 mph (112.65 km/h)68.13 mph (109.65 km/h)
75 mph (120.7 km/h)73 mph (117.48 km/h)
80 mph (128.75 km/h)77.86 mph (125.31 km/h)
85 mph (136.79 km/h)82.73 mph (133.14 km/h)
90 mph (144.84 km/h)87.6 mph (140.97 km/h)
95 mph (152.89 km/h)92.46 mph (148.81 km/h)
100 mph (160.93 km/h)97.33 mph (156.64 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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