Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
365/75r16 vs 385/85r16 Tire Comparison Side By Side
  365/75-16 385/85-16 Difference
Diameter inches (mm) 37.56 (953.9) 41.77 (1060.9) 4.21 (107) 11.2%
Width inches (mm) 14.37 (365) 15.16 (385) 0.79 (20) 5.5%
Circum. inches (mm) 117.98 (2996.77) 131.22 (3332.92) 13.23 (336.15) 11.2%
Sidewall Height inches (mm) 10.78 (273.75) 12.88 (327.25) 2.11 (53.5) 19.5%
Revolutions per mile (km) 537.03 (333.69) 482.86 (300.04) -54.16 (-33.66) -10.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.24 mph (35.8 km/h)
25 mph (40.23 km/h)27.8 mph (44.75 km/h)
30 mph (48.28 km/h)33.37 mph (53.7 km/h)
35 mph (56.33 km/h)38.93 mph (62.65 km/h)
40 mph (64.37 km/h)44.49 mph (71.59 km/h)
45 mph (72.42 km/h)50.05 mph (80.54 km/h)
50 mph (80.47 km/h)55.61 mph (89.49 km/h)
55 mph (88.51 km/h)61.17 mph (98.44 km/h)
60 mph (96.56 km/h)66.73 mph (107.39 km/h)
65 mph (104.61 km/h)72.29 mph (116.34 km/h)
70 mph (112.65 km/h)77.85 mph (125.29 km/h)
75 mph (120.7 km/h)83.41 mph (134.24 km/h)
80 mph (128.75 km/h)88.97 mph (143.19 km/h)
85 mph (136.79 km/h)94.53 mph (152.14 km/h)
90 mph (144.84 km/h)100.1 mph (161.09 km/h)
95 mph (152.89 km/h)105.66 mph (170.04 km/h)
100 mph (160.93 km/h)111.22 mph (178.99 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
12291427153716051678173117881856195020452149223323842552268227662813298632263749
Better Fuel Economy Factory Ratios Increased Power

Most Popular 365/75-R16 Comparisons

To Top