Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/50r19 vs 255/35r19 Tire Comparison Side By Side
  265/50-19 255/35-19 Difference
Diameter inches (mm) 29.43 (747.6) 26.03 (661.1) -3.41 (-86.5) -11.6%
Width inches (mm) 10.43 (265) 10.04 (255) -0.39 (-10) -3.8%
Circum. inches (mm) 92.47 (2348.65) 81.77 (2076.91) -10.7 (-271.75) -11.6%
Sidewall Height inches (mm) 5.22 (132.5) 3.51 (89.25) -1.7 (-43.25) -32.6%
Revolutions per mile (km) 685.22 (425.77) 774.88 (481.48) 89.66 (55.71) 13.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.69 mph (28.46 km/h)
25 mph (40.23 km/h)22.11 mph (35.58 km/h)
30 mph (48.28 km/h)26.53 mph (42.69 km/h)
35 mph (56.33 km/h)30.95 mph (49.81 km/h)
40 mph (64.37 km/h)35.37 mph (56.93 km/h)
45 mph (72.42 km/h)39.79 mph (64.04 km/h)
50 mph (80.47 km/h)44.21 mph (71.16 km/h)
55 mph (88.51 km/h)48.64 mph (78.27 km/h)
60 mph (96.56 km/h)53.06 mph (85.39 km/h)
65 mph (104.61 km/h)57.48 mph (92.5 km/h)
70 mph (112.65 km/h)61.9 mph (99.62 km/h)
75 mph (120.7 km/h)66.32 mph (106.74 km/h)
80 mph (128.75 km/h)70.74 mph (113.85 km/h)
85 mph (136.79 km/h)75.17 mph (120.97 km/h)
90 mph (144.84 km/h)79.59 mph (128.08 km/h)
95 mph (152.89 km/h)84.01 mph (135.2 km/h)
100 mph (160.93 km/h)88.43 mph (142.31 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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