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 205/55r16 Tire Comparison Side By Side
  125/80-16 205/55-16 Difference
Diameter inches (mm) 23.87 (606.4) 24.88 (631.9) 1 (25.5) 4.2%
Width inches (mm) 4.92 (125) 8.07 (205) 3.15 (80) 64%
Circum. inches (mm) 75 (1905.06) 78.16 (1985.17) 3.15 (80.11) 4.2%
Sidewall Height inches (mm) 3.94 (100) 4.44 (112.75) 0.5 (12.75) 12.8%
Revolutions per mile (km) 844.77 (524.92) 810.68 (503.73) -34.09 (-21.18) -4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.84 mph (33.54 km/h)
25 mph (40.23 km/h)26.05 mph (41.93 km/h)
30 mph (48.28 km/h)31.26 mph (50.31 km/h)
35 mph (56.33 km/h)36.47 mph (58.7 km/h)
40 mph (64.37 km/h)41.68 mph (67.08 km/h)
45 mph (72.42 km/h)46.89 mph (75.47 km/h)
50 mph (80.47 km/h)52.1 mph (83.85 km/h)
55 mph (88.51 km/h)57.31 mph (92.24 km/h)
60 mph (96.56 km/h)62.52 mph (100.62 km/h)
65 mph (104.61 km/h)67.73 mph (109.01 km/h)
70 mph (112.65 km/h)72.94 mph (117.39 km/h)
75 mph (120.7 km/h)78.15 mph (125.78 km/h)
80 mph (128.75 km/h)83.36 mph (134.16 km/h)
85 mph (136.79 km/h)88.57 mph (142.55 km/h)
90 mph (144.84 km/h)93.78 mph (150.93 km/h)
95 mph (152.89 km/h)98.99 mph (159.32 km/h)
100 mph (160.93 km/h)104.21 mph (167.7 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
20632397258126952818290630023116327534333608374940034284450446444723501354176294
Better Fuel Economy Factory Ratios Increased Power

Most Popular 125/80-R16 Comparisons

To Top