Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/55r16 vs 225/35r20 Tire Comparison Side By Side
  205/55-16 225/35-20 Difference
Diameter inches (mm) 24.88 (631.9) 26.2 (665.5) 1.32 (33.6) 5.3%
Width inches (mm) 8.07 (205) 8.86 (225) 0.79 (20) 9.8%
Circum. inches (mm) 78.16 (1985.17) 82.31 (2090.73) 4.16 (105.56) 5.3%
Sidewall Height inches (mm) 4.44 (112.75) 3.1 (78.75) -1.34 (-34) -30.2%
Revolutions per mile (km) 810.68 (503.73) 769.75 (478.3) -40.93 (-25.43) -5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.06 mph (33.9 km/h)
25 mph (40.23 km/h)26.33 mph (42.37 km/h)
30 mph (48.28 km/h)31.6 mph (50.85 km/h)
35 mph (56.33 km/h)36.86 mph (59.32 km/h)
40 mph (64.37 km/h)42.13 mph (67.8 km/h)
45 mph (72.42 km/h)47.39 mph (76.27 km/h)
50 mph (80.47 km/h)52.66 mph (84.75 km/h)
55 mph (88.51 km/h)57.92 mph (93.22 km/h)
60 mph (96.56 km/h)63.19 mph (101.7 km/h)
65 mph (104.61 km/h)68.46 mph (110.17 km/h)
70 mph (112.65 km/h)73.72 mph (118.64 km/h)
75 mph (120.7 km/h)78.99 mph (127.12 km/h)
80 mph (128.75 km/h)84.25 mph (135.59 km/h)
85 mph (136.79 km/h)89.52 mph (144.07 km/h)
90 mph (144.84 km/h)94.79 mph (152.54 km/h)
95 mph (152.89 km/h)100.05 mph (161.02 km/h)
100 mph (160.93 km/h)105.32 mph (169.49 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
19592276245125592676275928512959310932593426355938014068427644104485476051435977
Better Fuel Economy Factory Ratios Increased Power

Most Popular 205/55-R16 Comparisons

To Top