Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
110/90r19 vs 110/80r19 Tire Comparison Side By Side
  110/90-19 110/80-19 Difference
Diameter inches (mm) 26.8 (680.6) 25.93 (658.6) -0.87 (-22) -3.2%
Width inches (mm) 4.33 (110) 4.33 (110) 0 (0) 0%
Circum. inches (mm) 84.18 (2138.17) 81.46 (2069.05) -2.72 (-69.12) -3.2%
Sidewall Height inches (mm) 3.9 (99) 3.46 (88) -0.43 (-11) -11.1%
Revolutions per mile (km) 752.67 (467.69) 777.82 (483.31) 25.14 (15.62) 3.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.35 mph (31.15 km/h)
25 mph (40.23 km/h)24.19 mph (38.93 km/h)
30 mph (48.28 km/h)29.03 mph (46.72 km/h)
35 mph (56.33 km/h)33.87 mph (54.51 km/h)
40 mph (64.37 km/h)38.71 mph (62.29 km/h)
45 mph (72.42 km/h)43.55 mph (70.08 km/h)
50 mph (80.47 km/h)48.38 mph (77.87 km/h)
55 mph (88.51 km/h)53.22 mph (85.65 km/h)
60 mph (96.56 km/h)58.06 mph (93.44 km/h)
65 mph (104.61 km/h)62.9 mph (101.23 km/h)
70 mph (112.65 km/h)67.74 mph (109.01 km/h)
75 mph (120.7 km/h)72.58 mph (116.8 km/h)
80 mph (128.75 km/h)77.41 mph (124.59 km/h)
85 mph (136.79 km/h)82.25 mph (132.37 km/h)
90 mph (144.84 km/h)87.09 mph (140.16 km/h)
95 mph (152.89 km/h)91.93 mph (147.95 km/h)
100 mph (160.93 km/h)96.77 mph (155.73 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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