Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
145/90r16 vs 215/55r17 Tire Comparison Side By Side
  145/90-16 215/55-17 Difference
Diameter inches (mm) 26.28 (667.4) 26.31 (668.3) 0.04 (0.9) 0.1%
Width inches (mm) 5.71 (145) 8.46 (215) 2.76 (70) 48.3%
Circum. inches (mm) 82.55 (2096.7) 82.66 (2099.53) 0.11 (2.83) 0.1%
Sidewall Height inches (mm) 5.14 (130.5) 4.66 (118.25) -0.48 (-12.25) -9.4%
Revolutions per mile (km) 767.56 (476.94) 766.53 (476.3) -1.03 (-0.64) -0.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.03 mph (32.23 km/h)
25 mph (40.23 km/h)25.03 mph (40.29 km/h)
30 mph (48.28 km/h)30.04 mph (48.35 km/h)
35 mph (56.33 km/h)35.05 mph (56.4 km/h)
40 mph (64.37 km/h)40.05 mph (64.46 km/h)
45 mph (72.42 km/h)45.06 mph (72.52 km/h)
50 mph (80.47 km/h)50.07 mph (80.58 km/h)
55 mph (88.51 km/h)55.07 mph (88.63 km/h)
60 mph (96.56 km/h)60.08 mph (96.69 km/h)
65 mph (104.61 km/h)65.09 mph (104.75 km/h)
70 mph (112.65 km/h)70.09 mph (112.81 km/h)
75 mph (120.7 km/h)75.1 mph (120.86 km/h)
80 mph (128.75 km/h)80.11 mph (128.92 km/h)
85 mph (136.79 km/h)85.11 mph (136.98 km/h)
90 mph (144.84 km/h)90.12 mph (145.04 km/h)
95 mph (152.89 km/h)95.13 mph (153.09 km/h)
100 mph (160.93 km/h)100.13 mph (161.15 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
19512266244025482665274828392947309632463412354437854051425843914466474051225952
Better Fuel Economy Factory Ratios Increased Power

Most Popular 145/90-R16 Comparisons

To Top