Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/40r14 vs 165/40r14 Tire Comparison Side By Side
  195/40-14 165/40-14 Difference
Diameter inches (mm) 20.14 (511.6) 19.2 (487.6) -0.94 (-24) -4.7%
Width inches (mm) 7.68 (195) 6.5 (165) -1.18 (-30) -15.4%
Circum. inches (mm) 63.28 (1607.24) 60.31 (1531.84) -2.97 (-75.4) -4.7%
Sidewall Height inches (mm) 3.07 (78) 2.6 (66) -0.47 (-12) -15.4%
Revolutions per mile (km) 1001.31 (622.18) 1050.59 (652.81) 49.29 (30.62) 4.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.06 mph (30.68 km/h)
25 mph (40.23 km/h)23.83 mph (38.35 km/h)
30 mph (48.28 km/h)28.59 mph (46.02 km/h)
35 mph (56.33 km/h)33.36 mph (53.68 km/h)
40 mph (64.37 km/h)38.12 mph (61.35 km/h)
45 mph (72.42 km/h)42.89 mph (69.02 km/h)
50 mph (80.47 km/h)47.65 mph (76.69 km/h)
55 mph (88.51 km/h)52.42 mph (84.36 km/h)
60 mph (96.56 km/h)57.19 mph (92.03 km/h)
65 mph (104.61 km/h)61.95 mph (99.7 km/h)
70 mph (112.65 km/h)66.72 mph (107.37 km/h)
75 mph (120.7 km/h)71.48 mph (115.04 km/h)
80 mph (128.75 km/h)76.25 mph (122.71 km/h)
85 mph (136.79 km/h)81.01 mph (130.38 km/h)
90 mph (144.84 km/h)85.78 mph (138.05 km/h)
95 mph (152.89 km/h)90.54 mph (145.72 km/h)
100 mph (160.93 km/h)95.31 mph (153.38 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Better Fuel Economy Factory Ratios Increased Power

Most Popular 195/40-R14 Comparisons

To Top