Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/70r19 vs 255/75r19 Tire Comparison Side By Side
  265/70-19 255/75-19 Difference
Diameter inches (mm) 33.61 (853.6) 34.06 (865.1) 0.45 (11.5) 1.3%
Width inches (mm) 10.43 (265) 10.04 (255) -0.39 (-10) -3.8%
Circum. inches (mm) 105.58 (2681.66) 107 (2717.79) 1.42 (36.13) 1.3%
Sidewall Height inches (mm) 7.3 (185.5) 7.53 (191.25) 0.23 (5.75) 3.1%
Revolutions per mile (km) 600.13 (372.9) 592.15 (367.95) -7.98 (-4.96) -1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.27 mph (32.62 km/h)
25 mph (40.23 km/h)25.34 mph (40.78 km/h)
30 mph (48.28 km/h)30.4 mph (48.93 km/h)
35 mph (56.33 km/h)35.47 mph (57.09 km/h)
40 mph (64.37 km/h)40.54 mph (65.24 km/h)
45 mph (72.42 km/h)45.61 mph (73.4 km/h)
50 mph (80.47 km/h)50.67 mph (81.55 km/h)
55 mph (88.51 km/h)55.74 mph (89.71 km/h)
60 mph (96.56 km/h)60.81 mph (97.86 km/h)
65 mph (104.61 km/h)65.88 mph (106.02 km/h)
70 mph (112.65 km/h)70.94 mph (114.17 km/h)
75 mph (120.7 km/h)76.01 mph (122.33 km/h)
80 mph (128.75 km/h)81.08 mph (130.48 km/h)
85 mph (136.79 km/h)86.15 mph (138.64 km/h)
90 mph (144.84 km/h)91.21 mph (146.79 km/h)
95 mph (152.89 km/h)96.28 mph (154.95 km/h)
100 mph (160.93 km/h)101.35 mph (163.1 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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