Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
175/70r14 vs 185/60r14 Tire Comparison Side By Side
  175/70-14 185/60-14 Difference
Diameter inches (mm) 23.65 (600.6) 22.74 (577.6) -0.91 (-23) -3.8%
Width inches (mm) 6.89 (175) 7.28 (185) 0.39 (10) 5.7%
Circum. inches (mm) 74.29 (1886.84) 71.44 (1814.58) -2.84 (-72.26) -3.8%
Sidewall Height inches (mm) 4.82 (122.5) 4.37 (111) -0.45 (-11.5) -9.4%
Revolutions per mile (km) 852.93 (529.99) 886.89 (551.09) 33.96 (21.1) 4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.23 mph (30.95 km/h)
25 mph (40.23 km/h)24.04 mph (38.69 km/h)
30 mph (48.28 km/h)28.85 mph (46.43 km/h)
35 mph (56.33 km/h)33.66 mph (54.17 km/h)
40 mph (64.37 km/h)38.47 mph (61.91 km/h)
45 mph (72.42 km/h)43.28 mph (69.65 km/h)
50 mph (80.47 km/h)48.09 mph (77.39 km/h)
55 mph (88.51 km/h)52.89 mph (85.12 km/h)
60 mph (96.56 km/h)57.7 mph (92.86 km/h)
65 mph (104.61 km/h)62.51 mph (100.6 km/h)
70 mph (112.65 km/h)67.32 mph (108.34 km/h)
75 mph (120.7 km/h)72.13 mph (116.08 km/h)
80 mph (128.75 km/h)76.94 mph (123.82 km/h)
85 mph (136.79 km/h)81.74 mph (131.56 km/h)
90 mph (144.84 km/h)86.55 mph (139.29 km/h)
95 mph (152.89 km/h)91.36 mph (147.03 km/h)
100 mph (160.93 km/h)96.17 mph (154.77 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
22572622282429483083317932853409358237553947410143794687492750815167548459266886
Better Fuel Economy Factory Ratios Increased Power

Most Popular 175/70-R14 Comparisons

To Top