Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/35r22 vs 315/30r22 Tire Comparison Side By Side
  275/35-22 315/30-22 Difference
Diameter inches (mm) 29.58 (751.3) 29.44 (747.8) -0.14 (-3.5) -0.5%
Width inches (mm) 10.83 (275) 12.4 (315) 1.57 (40) 14.5%
Circum. inches (mm) 92.92 (2360.28) 92.49 (2349.28) -0.43 (-11) -0.5%
Sidewall Height inches (mm) 3.79 (96.25) 3.72 (94.5) -0.07 (-1.75) -1.8%
Revolutions per mile (km) 681.84 (423.68) 685.04 (425.66) 3.19 (1.98) 0.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.91 mph (32.04 km/h)
25 mph (40.23 km/h)24.88 mph (40.05 km/h)
30 mph (48.28 km/h)29.86 mph (48.06 km/h)
35 mph (56.33 km/h)34.84 mph (56.06 km/h)
40 mph (64.37 km/h)39.81 mph (64.07 km/h)
45 mph (72.42 km/h)44.79 mph (72.08 km/h)
50 mph (80.47 km/h)49.77 mph (80.09 km/h)
55 mph (88.51 km/h)54.74 mph (88.1 km/h)
60 mph (96.56 km/h)59.72 mph (96.11 km/h)
65 mph (104.61 km/h)64.7 mph (104.12 km/h)
70 mph (112.65 km/h)69.67 mph (112.13 km/h)
75 mph (120.7 km/h)74.65 mph (120.14 km/h)
80 mph (128.75 km/h)79.63 mph (128.15 km/h)
85 mph (136.79 km/h)84.6 mph (136.16 km/h)
90 mph (144.84 km/h)89.58 mph (144.17 km/h)
95 mph (152.89 km/h)94.56 mph (152.18 km/h)
100 mph (160.93 km/h)99.53 mph (160.18 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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