Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
110/80r14 vs 100/90r14 Tire Comparison Side By Side
  110/80-14 100/90-14 Difference
Diameter inches (mm) 20.93 (531.6) 21.09 (535.6) 0.16 (4) 0.8%
Width inches (mm) 4.33 (110) 3.94 (100) -0.39 (-10) -9.1%
Circum. inches (mm) 65.75 (1670.07) 66.25 (1682.64) 0.49 (12.57) 0.8%
Sidewall Height inches (mm) 3.46 (88) 3.54 (90) 0.08 (2) 2.3%
Revolutions per mile (km) 963.64 (598.78) 956.44 (594.3) -7.2 (-4.47) -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 (40.54 km/h)
30 mph (48.28 km/h)30.23 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 (72.97 km/h)
50 mph (80.47 km/h)50.38 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 (97.29 km/h)
65 mph (104.61 km/h)65.49 mph (105.39 km/h)
70 mph (112.65 km/h)70.53 mph (113.5 km/h)
75 mph (120.7 km/h)75.56 mph (121.61 km/h)
80 mph (128.75 km/h)80.6 mph (129.72 km/h)
85 mph (136.79 km/h)85.64 mph (137.82 km/h)
90 mph (144.84 km/h)90.68 mph (145.93 km/h)
95 mph (152.89 km/h)95.71 mph (154.04 km/h)
100 mph (160.93 km/h)100.75 mph (162.15 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Better Fuel Economy Factory Ratios Increased Power

Most Popular 110/80-R14 Comparisons

To Top