Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/75r14 vs 225/75r15 Tire Comparison Side By Side
  215/75-14 225/75-15 Difference
Diameter inches (mm) 26.7 (678.1) 28.29 (718.5) 1.59 (40.4) 6%
Width inches (mm) 8.46 (215) 8.86 (225) 0.39 (10) 4.7%
Circum. inches (mm) 83.87 (2130.31) 88.87 (2257.23) 5 (126.92) 6%
Sidewall Height inches (mm) 6.35 (161.25) 6.64 (168.75) 0.3 (7.5) 4.7%
Revolutions per mile (km) 755.45 (469.41) 712.97 (443.02) -42.48 (-26.39) -5.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.19 mph (34.1 km/h)
25 mph (40.23 km/h)26.49 mph (42.63 km/h)
30 mph (48.28 km/h)31.79 mph (51.16 km/h)
35 mph (56.33 km/h)37.09 mph (59.68 km/h)
40 mph (64.37 km/h)42.38 mph (68.21 km/h)
45 mph (72.42 km/h)47.68 mph (76.74 km/h)
50 mph (80.47 km/h)52.98 mph (85.26 km/h)
55 mph (88.51 km/h)58.28 mph (93.79 km/h)
60 mph (96.56 km/h)63.57 mph (102.31 km/h)
65 mph (104.61 km/h)68.87 mph (110.84 km/h)
70 mph (112.65 km/h)74.17 mph (119.37 km/h)
75 mph (120.7 km/h)79.47 mph (127.89 km/h)
80 mph (128.75 km/h)84.77 mph (136.42 km/h)
85 mph (136.79 km/h)90.06 mph (144.94 km/h)
90 mph (144.84 km/h)95.36 mph (153.47 km/h)
95 mph (152.89 km/h)100.66 mph (162 km/h)
100 mph (160.93 km/h)105.96 mph (170.52 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
18142108227023702478255626402741288030193173329735213768396140844154440947645536
Better Fuel Economy Factory Ratios Increased Power

Most Popular 215/75-R14 Comparisons

To Top