Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/70r14 vs 245/60r14 Tire Comparison Side By Side
  245/70-14 245/60-14 Difference
Diameter inches (mm) 27.5 (698.6) 25.57 (649.6) -1.93 (-49) -7%
Width inches (mm) 9.65 (245) 9.65 (245) 0 (0) 0%
Circum. inches (mm) 86.41 (2194.72) 80.35 (2040.78) -6.06 (-153.94) -7%
Sidewall Height inches (mm) 6.75 (171.5) 5.79 (147) -0.96 (-24.5) -14.3%
Revolutions per mile (km) 733.28 (455.64) 788.59 (490.01) 55.31 (34.37) 7.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.6 mph (29.93 km/h)
25 mph (40.23 km/h)23.25 mph (37.41 km/h)
30 mph (48.28 km/h)27.9 mph (44.89 km/h)
35 mph (56.33 km/h)32.55 mph (52.38 km/h)
40 mph (64.37 km/h)37.19 mph (59.86 km/h)
45 mph (72.42 km/h)41.84 mph (67.34 km/h)
50 mph (80.47 km/h)46.49 mph (74.82 km/h)
55 mph (88.51 km/h)51.14 mph (82.31 km/h)
60 mph (96.56 km/h)55.79 mph (89.79 km/h)
65 mph (104.61 km/h)60.44 mph (97.27 km/h)
70 mph (112.65 km/h)65.09 mph (104.75 km/h)
75 mph (120.7 km/h)69.74 mph (112.24 km/h)
80 mph (128.75 km/h)74.39 mph (119.72 km/h)
85 mph (136.79 km/h)79.04 mph (127.2 km/h)
90 mph (144.84 km/h)83.69 mph (134.68 km/h)
95 mph (152.89 km/h)88.34 mph (142.16 km/h)
100 mph (160.93 km/h)92.99 mph (149.65 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
20072331251126222741282729213032318533393510364638944167438145174594487652696123
Better Fuel Economy Factory Ratios Increased Power

Most Popular 245/70-R14 Comparisons

To Top