Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
335/30r20 vs 275/35r19 Tire Comparison Side By Side
  335/30-20 275/35-19 Difference
Diameter inches (mm) 27.91 (709) 26.58 (675.1) -1.33 (-33.9) -4.8%
Width inches (mm) 13.19 (335) 10.83 (275) -2.36 (-60) -17.9%
Circum. inches (mm) 87.69 (2227.39) 83.5 (2120.89) -4.19 (-106.5) -4.8%
Sidewall Height inches (mm) 3.96 (100.5) 3.79 (96.25) -0.17 (-4.25) -4.2%
Revolutions per mile (km) 722.52 (448.96) 758.81 (471.5) 36.28 (22.54) 5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.04 mph (30.65 km/h)
25 mph (40.23 km/h)23.8 mph (38.31 km/h)
30 mph (48.28 km/h)28.57 mph (45.97 km/h)
35 mph (56.33 km/h)33.33 mph (53.63 km/h)
40 mph (64.37 km/h)38.09 mph (61.3 km/h)
45 mph (72.42 km/h)42.85 mph (68.96 km/h)
50 mph (80.47 km/h)47.61 mph (76.62 km/h)
55 mph (88.51 km/h)52.37 mph (84.28 km/h)
60 mph (96.56 km/h)57.13 mph (91.94 km/h)
65 mph (104.61 km/h)61.89 mph (99.61 km/h)
70 mph (112.65 km/h)66.65 mph (107.27 km/h)
75 mph (120.7 km/h)71.41 mph (114.93 km/h)
80 mph (128.75 km/h)76.17 mph (122.59 km/h)
85 mph (136.79 km/h)80.94 mph (130.25 km/h)
90 mph (144.84 km/h)85.7 mph (137.92 km/h)
95 mph (152.89 km/h)90.46 mph (145.58 km/h)
100 mph (160.93 km/h)95.22 mph (153.24 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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