Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/60r14 vs 225/70r14 Tire Comparison Side By Side
  245/60-14 225/70-14 Difference
Diameter inches (mm) 25.57 (649.6) 26.4 (670.6) 0.83 (21) 3.2%
Width inches (mm) 9.65 (245) 8.86 (225) -0.79 (-20) -8.2%
Circum. inches (mm) 80.35 (2040.78) 82.94 (2106.75) 2.6 (65.97) 3.2%
Sidewall Height inches (mm) 5.79 (147) 6.2 (157.5) 0.41 (10.5) 7.1%
Revolutions per mile (km) 788.59 (490.01) 763.9 (474.66) -24.69 (-15.34) -3.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.65 mph (33.23 km/h)
25 mph (40.23 km/h)25.81 mph (41.53 km/h)
30 mph (48.28 km/h)30.97 mph (49.84 km/h)
35 mph (56.33 km/h)36.13 mph (58.15 km/h)
40 mph (64.37 km/h)41.29 mph (66.45 km/h)
45 mph (72.42 km/h)46.45 mph (74.76 km/h)
50 mph (80.47 km/h)51.62 mph (83.07 km/h)
55 mph (88.51 km/h)56.78 mph (91.38 km/h)
60 mph (96.56 km/h)61.94 mph (99.68 km/h)
65 mph (104.61 km/h)67.1 mph (107.99 km/h)
70 mph (112.65 km/h)72.26 mph (116.3 km/h)
75 mph (120.7 km/h)77.42 mph (124.6 km/h)
80 mph (128.75 km/h)82.59 mph (132.91 km/h)
85 mph (136.79 km/h)87.75 mph (141.22 km/h)
90 mph (144.84 km/h)92.91 mph (149.52 km/h)
95 mph (152.89 km/h)98.07 mph (157.83 km/h)
100 mph (160.93 km/h)103.23 mph (166.14 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
19442258243225402655273828292937308632343400353237724037424443764450472351045931
Better Fuel Economy Factory Ratios Increased Power

Most Popular 245/60-R14 Comparisons

To Top