Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/40r19 vs 275/35r19 Tire Comparison Side By Side
  275/40-19 275/35-19 Difference
Diameter inches (mm) 27.66 (702.6) 26.58 (675.1) -1.08 (-27.5) -3.9%
Width inches (mm) 10.83 (275) 10.83 (275) 0 (0) 0%
Circum. inches (mm) 86.9 (2207.28) 83.5 (2120.89) -3.4 (-86.39) -3.9%
Sidewall Height inches (mm) 4.33 (110) 3.79 (96.25) -0.54 (-13.75) -12.5%
Revolutions per mile (km) 729.11 (453.04) 758.81 (471.5) 29.7 (18.45) 4.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.22 mph (30.93 km/h)
25 mph (40.23 km/h)24.02 mph (38.66 km/h)
30 mph (48.28 km/h)28.83 mph (46.39 km/h)
35 mph (56.33 km/h)33.63 mph (54.12 km/h)
40 mph (64.37 km/h)38.43 mph (61.85 km/h)
45 mph (72.42 km/h)43.24 mph (69.59 km/h)
50 mph (80.47 km/h)48.04 mph (77.32 km/h)
55 mph (88.51 km/h)52.85 mph (85.05 km/h)
60 mph (96.56 km/h)57.65 mph (92.78 km/h)
65 mph (104.61 km/h)62.46 mph (100.51 km/h)
70 mph (112.65 km/h)67.26 mph (108.24 km/h)
75 mph (120.7 km/h)72.06 mph (115.98 km/h)
80 mph (128.75 km/h)76.87 mph (123.71 km/h)
85 mph (136.79 km/h)81.67 mph (131.44 km/h)
90 mph (144.84 km/h)86.48 mph (139.17 km/h)
95 mph (152.89 km/h)91.28 mph (146.9 km/h)
100 mph (160.93 km/h)96.09 mph (154.64 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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