Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
35/12r16 vs 35/12.5r17 Tire Comparison Side By Side
  35/12-16 35/12.5-17 Difference
Diameter inches (mm) 34.97 (888.3) 35.03 (889.72) 0.06 (1.42) 0.2%
Width inches (mm) 12.01 (305) 12.52 (318) 0.51 (13) 4.3%
Circum. inches (mm) 109.87 (2790.68) 110.04 (2795.14) 0.18 (4.46) 0.2%
Sidewall Height inches (mm) 9.49 (240.95) 9.01 (228.96) -0.47 (-11.99) -5%
Revolutions per mile (km) 576.69 (358.34) 575.77 (357.76) -0.92 (-0.57) -0.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.03 mph (32.24 km/h)
25 mph (40.23 km/h)25.04 mph (40.3 km/h)
30 mph (48.28 km/h)30.05 mph (48.36 km/h)
35 mph (56.33 km/h)35.06 mph (56.42 km/h)
40 mph (64.37 km/h)40.06 mph (64.48 km/h)
45 mph (72.42 km/h)45.07 mph (72.54 km/h)
50 mph (80.47 km/h)50.08 mph (80.6 km/h)
55 mph (88.51 km/h)55.09 mph (88.66 km/h)
60 mph (96.56 km/h)60.1 mph (96.72 km/h)
65 mph (104.61 km/h)65.1 mph (104.77 km/h)
70 mph (112.65 km/h)70.11 mph (112.83 km/h)
75 mph (120.7 km/h)75.12 mph (120.89 km/h)
80 mph (128.75 km/h)80.13 mph (128.95 km/h)
85 mph (136.79 km/h)85.14 mph (137.01 km/h)
90 mph (144.84 km/h)90.14 mph (145.07 km/h)
95 mph (152.89 km/h)95.15 mph (153.13 km/h)
100 mph (160.93 km/h)100.16 mph (161.19 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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