Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
185/60r16 vs 185/55r16 Tire Comparison Side By Side
  185/60-16 185/55-16 Difference
Diameter inches (mm) 24.74 (628.4) 24.01 (609.9) -0.73 (-18.5) -2.9%
Width inches (mm) 7.28 (185) 7.28 (185) 0 (0) 0%
Circum. inches (mm) 77.72 (1974.18) 75.44 (1916.06) -2.29 (-58.12) -2.9%
Sidewall Height inches (mm) 4.37 (111) 4.01 (101.75) -0.36 (-9.25) -8.3%
Revolutions per mile (km) 815.2 (506.54) 839.92 (521.9) 24.73 (15.36) 3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.41 mph (31.24 km/h)
25 mph (40.23 km/h)24.26 mph (39.05 km/h)
30 mph (48.28 km/h)29.12 mph (46.86 km/h)
35 mph (56.33 km/h)33.97 mph (54.67 km/h)
40 mph (64.37 km/h)38.82 mph (62.48 km/h)
45 mph (72.42 km/h)43.68 mph (70.29 km/h)
50 mph (80.47 km/h)48.53 mph (78.1 km/h)
55 mph (88.51 km/h)53.38 mph (85.91 km/h)
60 mph (96.56 km/h)58.23 mph (93.72 km/h)
65 mph (104.61 km/h)63.09 mph (101.53 km/h)
70 mph (112.65 km/h)67.94 mph (109.34 km/h)
75 mph (120.7 km/h)72.79 mph (117.15 km/h)
80 mph (128.75 km/h)77.64 mph (124.96 km/h)
85 mph (136.79 km/h)82.5 mph (132.77 km/h)
90 mph (144.84 km/h)87.35 mph (140.58 km/h)
95 mph (152.89 km/h)92.2 mph (148.39 km/h)
100 mph (160.93 km/h)97.06 mph (156.2 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
21372483267427922920301131113229339335563738388441484439466648124893519456126521
Better Fuel Economy Factory Ratios Increased Power

Most Popular 185/60-R16 Comparisons

To Top