Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
226/60r16 vs 225/45r16 Tire Comparison Side By Side
  226/60-16 225/45-16 Difference
Diameter inches (mm) 26.68 (677.6) 23.97 (608.9) -2.7 (-68.7) -10.1%
Width inches (mm) 8.9 (226) 8.86 (225) -0.04 (-1) -0.4%
Circum. inches (mm) 83.81 (2128.74) 75.31 (1912.92) -8.5 (-215.83) -10.1%
Sidewall Height inches (mm) 5.34 (135.6) 3.99 (101.25) -1.35 (-34.35) -25.3%
Revolutions per mile (km) 756.01 (469.76) 841.3 (522.76) 85.3 (53) 11.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.97 mph (28.92 km/h)
25 mph (40.23 km/h)22.47 mph (36.15 km/h)
30 mph (48.28 km/h)26.96 mph (43.39 km/h)
35 mph (56.33 km/h)31.45 mph (50.62 km/h)
40 mph (64.37 km/h)35.94 mph (57.85 km/h)
45 mph (72.42 km/h)40.44 mph (65.08 km/h)
50 mph (80.47 km/h)44.93 mph (72.31 km/h)
55 mph (88.51 km/h)49.42 mph (79.54 km/h)
60 mph (96.56 km/h)53.92 mph (86.77 km/h)
65 mph (104.61 km/h)58.41 mph (94 km/h)
70 mph (112.65 km/h)62.9 mph (101.23 km/h)
75 mph (120.7 km/h)67.4 mph (108.46 km/h)
80 mph (128.75 km/h)71.89 mph (115.69 km/h)
85 mph (136.79 km/h)76.38 mph (122.93 km/h)
90 mph (144.84 km/h)80.88 mph (130.16 km/h)
95 mph (152.89 km/h)85.37 mph (137.39 km/h)
100 mph (160.93 km/h)89.86 mph (144.62 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
21412487267827972924301631163234339835623744389041544446467448194901520256216532
Better Fuel Economy Factory Ratios Increased Power

To Top