Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/55r19 vs 275/55r19 Tire Comparison Side By Side
  265/55-19 275/55-19 Difference
Diameter inches (mm) 30.48 (774.1) 30.91 (785.1) 0.43 (11) 1.4%
Width inches (mm) 10.43 (265) 10.83 (275) 0.39 (10) 3.8%
Circum. inches (mm) 95.74 (2431.91) 97.1 (2466.46) 1.36 (34.56) 1.4%
Sidewall Height inches (mm) 5.74 (145.75) 5.95 (151.25) 0.22 (5.5) 3.8%
Revolutions per mile (km) 661.76 (411.2) 652.49 (405.44) -9.27 (-5.76) -1.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.28 mph (32.64 km/h)
25 mph (40.23 km/h)25.36 mph (40.81 km/h)
30 mph (48.28 km/h)30.43 mph (48.97 km/h)
35 mph (56.33 km/h)35.5 mph (57.13 km/h)
40 mph (64.37 km/h)40.57 mph (65.29 km/h)
45 mph (72.42 km/h)45.64 mph (73.45 km/h)
50 mph (80.47 km/h)50.71 mph (81.61 km/h)
55 mph (88.51 km/h)55.78 mph (89.77 km/h)
60 mph (96.56 km/h)60.85 mph (97.93 km/h)
65 mph (104.61 km/h)65.92 mph (106.09 km/h)
70 mph (112.65 km/h)70.99 mph (114.26 km/h)
75 mph (120.7 km/h)76.07 mph (122.42 km/h)
80 mph (128.75 km/h)81.14 mph (130.58 km/h)
85 mph (136.79 km/h)86.21 mph (138.74 km/h)
90 mph (144.84 km/h)91.28 mph (146.9 km/h)
95 mph (152.89 km/h)96.35 mph (155.06 km/h)
100 mph (160.93 km/h)101.42 mph (163.22 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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