Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/60r15 vs 195/65r15 Tire Comparison Side By Side
  165/60-15 195/65-15 Difference
Diameter inches (mm) 22.8 (579) 24.98 (634.5) 2.19 (55.5) 9.6%
Width inches (mm) 6.5 (165) 7.68 (195) 1.18 (30) 18.2%
Circum. inches (mm) 71.61 (1818.98) 78.48 (1993.34) 6.86 (174.36) 9.6%
Sidewall Height inches (mm) 3.9 (99) 4.99 (126.75) 1.09 (27.75) 28%
Revolutions per mile (km) 884.75 (549.76) 807.36 (501.67) -77.39 (-48.09) -8.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.92 mph (35.27 km/h)
25 mph (40.23 km/h)27.4 mph (44.09 km/h)
30 mph (48.28 km/h)32.88 mph (52.91 km/h)
35 mph (56.33 km/h)38.35 mph (61.73 km/h)
40 mph (64.37 km/h)43.83 mph (70.54 km/h)
45 mph (72.42 km/h)49.31 mph (79.36 km/h)
50 mph (80.47 km/h)54.79 mph (88.18 km/h)
55 mph (88.51 km/h)60.27 mph (97 km/h)
60 mph (96.56 km/h)65.75 mph (105.82 km/h)
65 mph (104.61 km/h)71.23 mph (114.63 km/h)
70 mph (112.65 km/h)76.71 mph (123.45 km/h)
75 mph (120.7 km/h)82.19 mph (132.27 km/h)
80 mph (128.75 km/h)87.67 mph (141.09 km/h)
85 mph (136.79 km/h)93.15 mph (149.91 km/h)
90 mph (144.84 km/h)98.63 mph (158.72 km/h)
95 mph (152.89 km/h)104.11 mph (167.54 km/h)
100 mph (160.93 km/h)109.59 mph (176.36 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
20552387257026842806289429903104326134183593373339874267448546254704499253946269
Better Fuel Economy Factory Ratios Increased Power

Most Popular 165/60-R15 Comparisons

To Top