Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/30r19 vs 275/35r19 Tire Comparison Side By Side
  285/30-19 275/35-19 Difference
Diameter inches (mm) 25.73 (653.6) 26.58 (675.1) 0.85 (21.5) 3.3%
Width inches (mm) 11.22 (285) 10.83 (275) -0.39 (-10) -3.5%
Circum. inches (mm) 80.84 (2053.34) 83.5 (2120.89) 2.66 (67.54) 3.3%
Sidewall Height inches (mm) 3.37 (85.5) 3.79 (96.25) 0.42 (10.75) 12.6%
Revolutions per mile (km) 783.77 (487.01) 758.81 (471.5) -24.96 (-15.51) -3.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.66 mph (33.25 km/h)
25 mph (40.23 km/h)25.82 mph (41.56 km/h)
30 mph (48.28 km/h)30.99 mph (49.87 km/h)
35 mph (56.33 km/h)36.15 mph (58.18 km/h)
40 mph (64.37 km/h)41.32 mph (66.49 km/h)
45 mph (72.42 km/h)46.48 mph (74.8 km/h)
50 mph (80.47 km/h)51.64 mph (83.11 km/h)
55 mph (88.51 km/h)56.81 mph (91.43 km/h)
60 mph (96.56 km/h)61.97 mph (99.74 km/h)
65 mph (104.61 km/h)67.14 mph (108.05 km/h)
70 mph (112.65 km/h)72.3 mph (116.36 km/h)
75 mph (120.7 km/h)77.47 mph (124.67 km/h)
80 mph (128.75 km/h)82.63 mph (132.98 km/h)
85 mph (136.79 km/h)87.8 mph (141.29 km/h)
90 mph (144.84 km/h)92.96 mph (149.61 km/h)
95 mph (152.89 km/h)98.13 mph (157.92 km/h)
100 mph (160.93 km/h)103.29 mph (166.23 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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