Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/50r16 vs 235/45r17 Tire Comparison Side By Side
  225/50-16 235/45-17 Difference
Diameter inches (mm) 24.86 (631.4) 25.33 (643.3) 0.47 (11.9) 1.9%
Width inches (mm) 8.86 (225) 9.25 (235) 0.39 (10) 4.4%
Circum. inches (mm) 78.09 (1983.6) 79.57 (2020.99) 1.47 (37.38) 1.9%
Sidewall Height inches (mm) 4.43 (112.5) 4.16 (105.75) -0.27 (-6.75) -6%
Revolutions per mile (km) 811.32 (504.13) 796.32 (494.81) -15.01 (-9.33) -1.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.38 mph (32.79 km/h)
25 mph (40.23 km/h)25.47 mph (40.99 km/h)
30 mph (48.28 km/h)30.57 mph (49.19 km/h)
35 mph (56.33 km/h)35.66 mph (57.39 km/h)
40 mph (64.37 km/h)40.75 mph (65.59 km/h)
45 mph (72.42 km/h)45.85 mph (73.79 km/h)
50 mph (80.47 km/h)50.94 mph (81.98 km/h)
55 mph (88.51 km/h)56.04 mph (90.18 km/h)
60 mph (96.56 km/h)61.13 mph (98.38 km/h)
65 mph (104.61 km/h)66.23 mph (106.58 km/h)
70 mph (112.65 km/h)71.32 mph (114.78 km/h)
75 mph (120.7 km/h)76.41 mph (122.98 km/h)
80 mph (128.75 km/h)81.51 mph (131.17 km/h)
85 mph (136.79 km/h)86.6 mph (139.37 km/h)
90 mph (144.84 km/h)91.7 mph (147.57 km/h)
95 mph (152.89 km/h)96.79 mph (155.77 km/h)
100 mph (160.93 km/h)101.88 mph (163.97 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
20262354253526472768285429493061321633723544368239324208442445624639492453216183
Better Fuel Economy Factory Ratios Increased Power

Most Popular 225/50-R16 Comparisons

To Top