Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/75r16 vs 265/45r19 Tire Comparison Side By Side
  265/75-16 265/45-19 Difference
Diameter inches (mm) 31.65 (803.9) 28.39 (721.1) -3.26 (-82.8) -10.3%
Width inches (mm) 10.43 (265) 10.43 (265) 0 (0) 0%
Circum. inches (mm) 99.43 (2525.53) 89.19 (2265.4) -10.24 (-260.12) -10.3%
Sidewall Height inches (mm) 7.82 (198.75) 4.69 (119.25) -3.13 (-79.5) -40%
Revolutions per mile (km) 637.23 (395.96) 710.4 (441.42) 73.17 (45.47) 11.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.94 mph (28.87 km/h)
25 mph (40.23 km/h)22.43 mph (36.09 km/h)
30 mph (48.28 km/h)26.91 mph (43.31 km/h)
35 mph (56.33 km/h)31.4 mph (50.53 km/h)
40 mph (64.37 km/h)35.88 mph (57.74 km/h)
45 mph (72.42 km/h)40.37 mph (64.96 km/h)
50 mph (80.47 km/h)44.85 mph (72.18 km/h)
55 mph (88.51 km/h)49.34 mph (79.4 km/h)
60 mph (96.56 km/h)53.82 mph (86.62 km/h)
65 mph (104.61 km/h)58.31 mph (93.83 km/h)
70 mph (112.65 km/h)62.79 mph (101.05 km/h)
75 mph (120.7 km/h)67.28 mph (108.27 km/h)
80 mph (128.75 km/h)71.76 mph (115.49 km/h)
85 mph (136.79 km/h)76.25 mph (122.7 km/h)
90 mph (144.84 km/h)80.73 mph (129.92 km/h)
95 mph (152.89 km/h)85.22 mph (137.14 km/h)
100 mph (160.93 km/h)89.7 mph (144.36 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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