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 175/65r14 Tire Comparison Side By Side
  175/70-14 175/65-14 Difference
Diameter inches (mm) 23.65 (600.6) 22.96 (583.1) -0.69 (-17.5) -2.9%
Width inches (mm) 6.89 (175) 6.89 (175) 0 (0) 0%
Circum. inches (mm) 74.29 (1886.84) 72.12 (1831.86) -2.16 (-54.98) -2.9%
Sidewall Height inches (mm) 4.82 (122.5) 4.48 (113.75) -0.34 (-8.75) -7.1%
Revolutions per mile (km) 852.93 (529.99) 878.53 (545.89) 25.6 (15.91) 3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.42 mph (31.25 km/h)
25 mph (40.23 km/h)24.27 mph (39.06 km/h)
30 mph (48.28 km/h)29.13 mph (46.87 km/h)
35 mph (56.33 km/h)33.98 mph (54.69 km/h)
40 mph (64.37 km/h)38.83 mph (62.5 km/h)
45 mph (72.42 km/h)43.69 mph (70.31 km/h)
50 mph (80.47 km/h)48.54 mph (78.12 km/h)
55 mph (88.51 km/h)53.4 mph (85.94 km/h)
60 mph (96.56 km/h)58.25 mph (93.75 km/h)
65 mph (104.61 km/h)63.11 mph (101.56 km/h)
70 mph (112.65 km/h)67.96 mph (109.37 km/h)
75 mph (120.7 km/h)72.81 mph (117.18 km/h)
80 mph (128.75 km/h)77.67 mph (125 km/h)
85 mph (136.79 km/h)82.52 mph (132.81 km/h)
90 mph (144.84 km/h)87.38 mph (140.62 km/h)
95 mph (152.89 km/h)92.23 mph (148.43 km/h)
100 mph (160.93 km/h)97.09 mph (156.25 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
22362597279729213054314932543377354937203910406243384643488050335118543258706821
Better Fuel Economy Factory Ratios Increased Power

Most Popular 175/70-R14 Comparisons

To Top