Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
280/85r16 vs 35/10r16 Tire Comparison Side By Side
  280/85-16 35/10-16 Difference
Diameter inches (mm) 34.74 (882.4) 35 (889) 0.26 (6.6) 0.7%
Width inches (mm) 11.02 (280) 10 (254) -1.02 (-26) -9.3%
Circum. inches (mm) 109.14 (2772.14) 109.96 (2792.88) 0.82 (20.73) 0.7%
Sidewall Height inches (mm) 9.37 (238) 9.5 (241.3) 0.13 (3.3) 1.4%
Revolutions per mile (km) 580.54 (360.73) 576.23 (358.05) -4.31 (-2.68) -0.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.15 mph (32.43 km/h)
25 mph (40.23 km/h)25.19 mph (40.53 km/h)
30 mph (48.28 km/h)30.22 mph (48.64 km/h)
35 mph (56.33 km/h)35.26 mph (56.75 km/h)
40 mph (64.37 km/h)40.3 mph (64.86 km/h)
45 mph (72.42 km/h)45.34 mph (72.96 km/h)
50 mph (80.47 km/h)50.37 mph (81.07 km/h)
55 mph (88.51 km/h)55.41 mph (89.18 km/h)
60 mph (96.56 km/h)60.45 mph (97.28 km/h)
65 mph (104.61 km/h)65.49 mph (105.39 km/h)
70 mph (112.65 km/h)70.52 mph (113.5 km/h)
75 mph (120.7 km/h)75.56 mph (121.6 km/h)
80 mph (128.75 km/h)80.6 mph (129.71 km/h)
85 mph (136.79 km/h)85.64 mph (137.82 km/h)
90 mph (144.84 km/h)90.67 mph (145.92 km/h)
95 mph (152.89 km/h)95.71 mph (154.03 km/h)
100 mph (160.93 km/h)100.75 mph (162.14 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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