Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/35r19 vs 275/30r19 Tire Comparison Side By Side
  275/35-19 275/30-19 Difference
Diameter inches (mm) 26.58 (675.1) 25.5 (647.6) -1.08 (-27.5) -4.1%
Width inches (mm) 10.83 (275) 10.83 (275) 0 (0) 0%
Circum. inches (mm) 83.5 (2120.89) 80.1 (2034.5) -3.4 (-86.39) -4.1%
Sidewall Height inches (mm) 3.79 (96.25) 3.25 (82.5) -0.54 (-13.75) -14.3%
Revolutions per mile (km) 758.81 (471.5) 791.03 (491.52) 32.22 (20.02) 4.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.19 mph (30.88 km/h)
25 mph (40.23 km/h)23.98 mph (38.59 km/h)
30 mph (48.28 km/h)28.78 mph (46.31 km/h)
35 mph (56.33 km/h)33.57 mph (54.03 km/h)
40 mph (64.37 km/h)38.37 mph (61.75 km/h)
45 mph (72.42 km/h)43.17 mph (69.47 km/h)
50 mph (80.47 km/h)47.96 mph (77.19 km/h)
55 mph (88.51 km/h)52.76 mph (84.91 km/h)
60 mph (96.56 km/h)57.56 mph (92.63 km/h)
65 mph (104.61 km/h)62.35 mph (100.35 km/h)
70 mph (112.65 km/h)67.15 mph (108.07 km/h)
75 mph (120.7 km/h)71.94 mph (115.78 km/h)
80 mph (128.75 km/h)76.74 mph (123.5 km/h)
85 mph (136.79 km/h)81.54 mph (131.22 km/h)
90 mph (144.84 km/h)86.33 mph (138.94 km/h)
95 mph (152.89 km/h)91.13 mph (146.66 km/h)
100 mph (160.93 km/h)95.93 mph (154.38 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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