Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/70r14 vs 215/70r14 Tire Comparison Side By Side
  225/70-14 215/70-14 Difference
Diameter inches (mm) 26.4 (670.6) 25.85 (656.6) -0.55 (-14) -2.1%
Width inches (mm) 8.86 (225) 8.46 (215) -0.39 (-10) -4.4%
Circum. inches (mm) 82.94 (2106.75) 81.21 (2062.77) -1.73 (-43.98) -2.1%
Sidewall Height inches (mm) 6.2 (157.5) 5.93 (150.5) -0.28 (-7) -4.4%
Revolutions per mile (km) 763.9 (474.66) 780.19 (484.78) 16.29 (10.12) 2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.58 mph (31.51 km/h)
25 mph (40.23 km/h)24.48 mph (39.39 km/h)
30 mph (48.28 km/h)29.37 mph (47.27 km/h)
35 mph (56.33 km/h)34.27 mph (55.15 km/h)
40 mph (64.37 km/h)39.16 mph (63.03 km/h)
45 mph (72.42 km/h)44.06 mph (70.91 km/h)
50 mph (80.47 km/h)48.96 mph (78.79 km/h)
55 mph (88.51 km/h)53.85 mph (86.67 km/h)
60 mph (96.56 km/h)58.75 mph (94.54 km/h)
65 mph (104.61 km/h)63.64 mph (102.42 km/h)
70 mph (112.65 km/h)68.54 mph (110.3 km/h)
75 mph (120.7 km/h)73.43 mph (118.18 km/h)
80 mph (128.75 km/h)78.33 mph (126.06 km/h)
85 mph (136.79 km/h)83.23 mph (133.94 km/h)
90 mph (144.84 km/h)88.12 mph (141.82 km/h)
95 mph (152.89 km/h)93.02 mph (149.7 km/h)
100 mph (160.93 km/h)97.91 mph (157.57 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
19852306248425942712279628892999315133033472360838534123433444694545482452136058
Better Fuel Economy Factory Ratios Increased Power

Most Popular 225/70-R14 Comparisons

To Top