Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
125/85r16 vs 195/55r16 Tire Comparison Side By Side
  125/85-16 195/55-16 Difference
Diameter inches (mm) 24.37 (618.9) 24.44 (620.9) 0.08 (2) 0.3%
Width inches (mm) 4.92 (125) 7.68 (195) 2.76 (70) 56%
Circum. inches (mm) 76.55 (1944.33) 76.8 (1950.61) 0.25 (6.28) 0.3%
Sidewall Height inches (mm) 4.18 (106.25) 4.22 (107.25) 0.04 (1) 0.9%
Revolutions per mile (km) 827.71 (514.31) 825.04 (512.66) -2.67 (-1.66) -0.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.06 mph (32.29 km/h)
25 mph (40.23 km/h)25.08 mph (40.36 km/h)
30 mph (48.28 km/h)30.1 mph (48.44 km/h)
35 mph (56.33 km/h)35.11 mph (56.51 km/h)
40 mph (64.37 km/h)40.13 mph (64.58 km/h)
45 mph (72.42 km/h)45.15 mph (72.65 km/h)
50 mph (80.47 km/h)50.16 mph (80.73 km/h)
55 mph (88.51 km/h)55.18 mph (88.8 km/h)
60 mph (96.56 km/h)60.19 mph (96.87 km/h)
65 mph (104.61 km/h)65.21 mph (104.95 km/h)
70 mph (112.65 km/h)70.23 mph (113.02 km/h)
75 mph (120.7 km/h)75.24 mph (121.09 km/h)
80 mph (128.75 km/h)80.26 mph (129.16 km/h)
85 mph (136.79 km/h)85.27 mph (137.24 km/h)
90 mph (144.84 km/h)90.29 mph (145.31 km/h)
95 mph (152.89 km/h)95.31 mph (153.38 km/h)
100 mph (160.93 km/h)100.32 mph (161.45 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
21002439262727432868295730563172333334933672381540744360458347264807510255136406
Better Fuel Economy Factory Ratios Increased Power

Most Popular 125/85-R16 Comparisons

To Top