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 275/70r22.5 Tire Comparison Side By Side
  255/70-22.5 275/70-22.5 Difference
Diameter inches (mm) 36.56 (928.5) 37.66 (956.5) 1.1 (28) 3%
Width inches (mm) 10.04 (255) 10.83 (275) 0.79 (20) 7.8%
Circum. inches (mm) 114.84 (2916.97) 118.3 (3004.93) 3.46 (87.96) 3%
Sidewall Height inches (mm) 7.03 (178.5) 7.58 (192.5) 0.55 (14) 7.8%
Revolutions per mile (km) 551.72 (342.82) 535.57 (332.79) -16.15 (-10.04) -2.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.6 mph (33.16 km/h)
25 mph (40.23 km/h)25.75 mph (41.45 km/h)
30 mph (48.28 km/h)30.9 mph (49.74 km/h)
35 mph (56.33 km/h)36.06 mph (58.03 km/h)
40 mph (64.37 km/h)41.21 mph (66.32 km/h)
45 mph (72.42 km/h)46.36 mph (74.6 km/h)
50 mph (80.47 km/h)51.51 mph (82.89 km/h)
55 mph (88.51 km/h)56.66 mph (91.18 km/h)
60 mph (96.56 km/h)61.81 mph (99.47 km/h)
65 mph (104.61 km/h)66.96 mph (107.76 km/h)
70 mph (112.65 km/h)72.11 mph (116.05 km/h)
75 mph (120.7 km/h)77.26 mph (124.34 km/h)
80 mph (128.75 km/h)82.41 mph (132.63 km/h)
85 mph (136.79 km/h)87.56 mph (140.92 km/h)
90 mph (144.84 km/h)92.71 mph (149.21 km/h)
95 mph (152.89 km/h)97.86 mph (157.5 km/h)
100 mph (160.93 km/h)103.02 mph (165.79 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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