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 205/70r14 Tire Comparison Side By Side
  225/70-14 205/70-14 Difference
Diameter inches (mm) 26.4 (670.6) 25.3 (642.6) -1.1 (-28) -4.2%
Width inches (mm) 8.86 (225) 8.07 (205) -0.79 (-20) -8.9%
Circum. inches (mm) 82.94 (2106.75) 79.48 (2018.79) -3.46 (-87.96) -4.2%
Sidewall Height inches (mm) 6.2 (157.5) 5.65 (143.5) -0.55 (-14) -8.9%
Revolutions per mile (km) 763.9 (474.66) 797.18 (495.35) 33.29 (20.68) 4.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.16 mph (30.84 km/h)
25 mph (40.23 km/h)23.96 mph (38.55 km/h)
30 mph (48.28 km/h)28.75 mph (46.26 km/h)
35 mph (56.33 km/h)33.54 mph (53.98 km/h)
40 mph (64.37 km/h)38.33 mph (61.69 km/h)
45 mph (72.42 km/h)43.12 mph (69.4 km/h)
50 mph (80.47 km/h)47.91 mph (77.11 km/h)
55 mph (88.51 km/h)52.7 mph (84.82 km/h)
60 mph (96.56 km/h)57.49 mph (92.53 km/h)
65 mph (104.61 km/h)62.29 mph (100.24 km/h)
70 mph (112.65 km/h)67.08 mph (107.95 km/h)
75 mph (120.7 km/h)71.87 mph (115.66 km/h)
80 mph (128.75 km/h)76.66 mph (123.37 km/h)
85 mph (136.79 km/h)81.45 mph (131.08 km/h)
90 mph (144.84 km/h)86.24 mph (138.79 km/h)
95 mph (152.89 km/h)91.03 mph (146.5 km/h)
100 mph (160.93 km/h)95.82 mph (154.22 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
20292357253826502771285729523065322033753548368639374213442945674644492953266190
Better Fuel Economy Factory Ratios Increased Power

Most Popular 225/70-R14 Comparisons

To Top