Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/35r19 vs 275/30r19 Tire Comparison Side By Side
  265/35-19 275/30-19 Difference
Diameter inches (mm) 26.3 (668.1) 25.5 (647.6) -0.81 (-20.5) -3.1%
Width inches (mm) 10.43 (265) 10.83 (275) 0.39 (10) 3.8%
Circum. inches (mm) 82.63 (2098.9) 80.1 (2034.5) -2.54 (-64.4) -3.1%
Sidewall Height inches (mm) 3.65 (92.75) 3.25 (82.5) -0.4 (-10.25) -11.1%
Revolutions per mile (km) 766.76 (476.44) 791.03 (491.52) 24.27 (15.08) 3.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.39 mph (31.2 km/h)
25 mph (40.23 km/h)24.23 mph (39 km/h)
30 mph (48.28 km/h)29.08 mph (46.8 km/h)
35 mph (56.33 km/h)33.93 mph (54.6 km/h)
40 mph (64.37 km/h)38.77 mph (62.4 km/h)
45 mph (72.42 km/h)43.62 mph (70.2 km/h)
50 mph (80.47 km/h)48.47 mph (78 km/h)
55 mph (88.51 km/h)53.31 mph (85.8 km/h)
60 mph (96.56 km/h)58.16 mph (93.6 km/h)
65 mph (104.61 km/h)63.01 mph (101.4 km/h)
70 mph (112.65 km/h)67.85 mph (109.2 km/h)
75 mph (120.7 km/h)72.7 mph (117 km/h)
80 mph (128.75 km/h)77.55 mph (124.8 km/h)
85 mph (136.79 km/h)82.39 mph (132.6 km/h)
90 mph (144.84 km/h)87.24 mph (140.4 km/h)
95 mph (152.89 km/h)92.09 mph (148.2 km/h)
100 mph (160.93 km/h)96.93 mph (156 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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