Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
125/80r16 vs 175/60r16 Tire Comparison Side By Side
  125/80-16 175/60-16 Difference
Diameter inches (mm) 23.87 (606.4) 24.27 (616.4) 0.39 (10) 1.6%
Width inches (mm) 4.92 (125) 6.89 (175) 1.97 (50) 40%
Circum. inches (mm) 75 (1905.06) 76.24 (1936.48) 1.24 (31.42) 1.6%
Sidewall Height inches (mm) 3.94 (100) 4.13 (105) 0.2 (5) 5%
Revolutions per mile (km) 844.77 (524.92) 831.07 (516.4) -13.7 (-8.52) -1.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.33 mph (32.72 km/h)
25 mph (40.23 km/h)25.41 mph (40.9 km/h)
30 mph (48.28 km/h)30.49 mph (49.08 km/h)
35 mph (56.33 km/h)35.58 mph (57.26 km/h)
40 mph (64.37 km/h)40.66 mph (65.44 km/h)
45 mph (72.42 km/h)45.74 mph (73.61 km/h)
50 mph (80.47 km/h)50.82 mph (81.79 km/h)
55 mph (88.51 km/h)55.91 mph (89.97 km/h)
60 mph (96.56 km/h)60.99 mph (98.15 km/h)
65 mph (104.61 km/h)66.07 mph (106.33 km/h)
70 mph (112.65 km/h)71.15 mph (114.51 km/h)
75 mph (120.7 km/h)76.24 mph (122.69 km/h)
80 mph (128.75 km/h)81.32 mph (130.87 km/h)
85 mph (136.79 km/h)86.4 mph (139.05 km/h)
90 mph (144.84 km/h)91.48 mph (147.23 km/h)
95 mph (152.89 km/h)96.57 mph (155.41 km/h)
100 mph (160.93 km/h)101.65 mph (163.59 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
21152457264627632889297930783195335735193699384341044392461747614842513955536453
Better Fuel Economy Factory Ratios Increased Power

Most Popular 125/80-R16 Comparisons

To Top