Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
185/60r15 vs 195/60r15 Tire Comparison Side By Side
  185/60-15 195/60-15 Difference
Diameter inches (mm) 23.74 (603) 24.21 (615) 0.47 (12) 2%
Width inches (mm) 7.28 (185) 7.68 (195) 0.39 (10) 5.4%
Circum. inches (mm) 74.58 (1894.38) 76.07 (1932.08) 1.48 (37.7) 2%
Sidewall Height inches (mm) 4.37 (111) 4.61 (117) 0.24 (6) 5.4%
Revolutions per mile (km) 849.54 (527.88) 832.96 (517.58) -16.58 (-10.3) -2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.4 mph (32.83 km/h)
25 mph (40.23 km/h)25.5 mph (41.03 km/h)
30 mph (48.28 km/h)30.6 mph (49.24 km/h)
35 mph (56.33 km/h)35.7 mph (57.45 km/h)
40 mph (64.37 km/h)40.8 mph (65.65 km/h)
45 mph (72.42 km/h)45.9 mph (73.86 km/h)
50 mph (80.47 km/h)51 mph (82.07 km/h)
55 mph (88.51 km/h)56.09 mph (90.28 km/h)
60 mph (96.56 km/h)61.19 mph (98.48 km/h)
65 mph (104.61 km/h)66.29 mph (106.69 km/h)
70 mph (112.65 km/h)71.39 mph (114.9 km/h)
75 mph (120.7 km/h)76.49 mph (123.1 km/h)
80 mph (128.75 km/h)81.59 mph (131.31 km/h)
85 mph (136.79 km/h)86.69 mph (139.52 km/h)
90 mph (144.84 km/h)91.79 mph (147.72 km/h)
95 mph (152.89 km/h)96.89 mph (155.93 km/h)
100 mph (160.93 km/h)101.99 mph (164.14 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
21202462265227692895298630853202336435273707385241134402462747724853515055656467
Better Fuel Economy Factory Ratios Increased Power

Most Popular 185/60-R15 Comparisons

To Top