Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/55r15 vs 195/50r15 Tire Comparison Side By Side
  205/55-15 195/50-15 Difference
Diameter inches (mm) 23.88 (606.5) 22.68 (576) -1.2 (-30.5) -5%
Width inches (mm) 8.07 (205) 7.68 (195) -0.39 (-10) -4.9%
Circum. inches (mm) 75.01 (1905.38) 71.24 (1809.56) -3.77 (-95.82) -5%
Sidewall Height inches (mm) 4.44 (112.75) 3.84 (97.5) -0.6 (-15.25) -13.5%
Revolutions per mile (km) 844.63 (524.83) 889.36 (552.62) 44.72 (27.79) 5.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.99 mph (30.57 km/h)
25 mph (40.23 km/h)23.74 mph (38.21 km/h)
30 mph (48.28 km/h)28.49 mph (45.85 km/h)
35 mph (56.33 km/h)33.24 mph (53.49 km/h)
40 mph (64.37 km/h)37.99 mph (61.14 km/h)
45 mph (72.42 km/h)42.74 mph (68.78 km/h)
50 mph (80.47 km/h)47.49 mph (76.42 km/h)
55 mph (88.51 km/h)52.23 mph (84.06 km/h)
60 mph (96.56 km/h)56.98 mph (91.7 km/h)
65 mph (104.61 km/h)61.73 mph (99.35 km/h)
70 mph (112.65 km/h)66.48 mph (106.99 km/h)
75 mph (120.7 km/h)71.23 mph (114.63 km/h)
80 mph (128.75 km/h)75.98 mph (122.27 km/h)
85 mph (136.79 km/h)80.73 mph (129.92 km/h)
90 mph (144.84 km/h)85.47 mph (137.56 km/h)
95 mph (152.89 km/h)90.22 mph (145.2 km/h)
100 mph (160.93 km/h)94.97 mph (152.84 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
22632629283129573091318832943419359237663958411243924700494150955181549959426905
Better Fuel Economy Factory Ratios Increased Power

Most Popular 205/55-R15 Comparisons

To Top