Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/40r22 vs 275/30r24 Tire Comparison Side By Side
  275/40-22 275/30-24 Difference
Diameter inches (mm) 30.66 (778.8) 30.5 (774.6) -0.17 (-4.2) -0.5%
Width inches (mm) 10.83 (275) 10.83 (275) 0 (0) 0%
Circum. inches (mm) 96.33 (2446.67) 95.81 (2433.48) -0.52 (-13.19) -0.5%
Sidewall Height inches (mm) 4.33 (110) 3.25 (82.5) -1.08 (-27.5) -25%
Revolutions per mile (km) 657.77 (408.72) 661.34 (410.93) 3.57 (2.22) 0.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.89 mph (32.01 km/h)
25 mph (40.23 km/h)24.87 mph (40.02 km/h)
30 mph (48.28 km/h)29.84 mph (48.02 km/h)
35 mph (56.33 km/h)34.81 mph (56.02 km/h)
40 mph (64.37 km/h)39.78 mph (64.03 km/h)
45 mph (72.42 km/h)44.76 mph (72.03 km/h)
50 mph (80.47 km/h)49.73 mph (80.03 km/h)
55 mph (88.51 km/h)54.7 mph (88.04 km/h)
60 mph (96.56 km/h)59.68 mph (96.04 km/h)
65 mph (104.61 km/h)64.65 mph (104.04 km/h)
70 mph (112.65 km/h)69.62 mph (112.05 km/h)
75 mph (120.7 km/h)74.6 mph (120.05 km/h)
80 mph (128.75 km/h)79.57 mph (128.05 km/h)
85 mph (136.79 km/h)84.54 mph (136.06 km/h)
90 mph (144.84 km/h)89.51 mph (144.06 km/h)
95 mph (152.89 km/h)94.49 mph (152.06 km/h)
100 mph (160.93 km/h)99.46 mph (160.07 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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