Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/45r15 vs 205/45r16 Tire Comparison Side By Side
  205/45-15 205/45-16 Difference
Diameter inches (mm) 22.26 (565.5) 23.26 (590.9) 1 (25.4) 4.5%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 69.94 (1776.57) 73.09 (1856.37) 3.14 (79.8) 4.5%
Sidewall Height inches (mm) 3.63 (92.25) 3.63 (92.25) 0 (0) 0%
Revolutions per mile (km) 905.87 (562.88) 866.93 (538.69) -38.94 (-24.2) -4.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.9 mph (33.63 km/h)
25 mph (40.23 km/h)26.12 mph (42.04 km/h)
30 mph (48.28 km/h)31.35 mph (50.45 km/h)
35 mph (56.33 km/h)36.57 mph (58.86 km/h)
40 mph (64.37 km/h)41.8 mph (67.27 km/h)
45 mph (72.42 km/h)47.02 mph (75.67 km/h)
50 mph (80.47 km/h)52.25 mph (84.08 km/h)
55 mph (88.51 km/h)57.47 mph (92.49 km/h)
60 mph (96.56 km/h)62.69 mph (100.9 km/h)
65 mph (104.61 km/h)67.92 mph (109.31 km/h)
70 mph (112.65 km/h)73.14 mph (117.71 km/h)
75 mph (120.7 km/h)78.37 mph (126.12 km/h)
80 mph (128.75 km/h)83.59 mph (134.53 km/h)
85 mph (136.79 km/h)88.82 mph (142.94 km/h)
90 mph (144.84 km/h)94.04 mph (151.35 km/h)
95 mph (152.89 km/h)99.27 mph (159.76 km/h)
100 mph (160.93 km/h)104.49 mph (168.16 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
22062563276028823014310732113333350236713858400942814581481649665051536157926731
Better Fuel Economy Factory Ratios Increased Power

Most Popular 205/45-R15 Comparisons

To Top