Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/60r15 vs 140/80r15 Tire Comparison Side By Side
  160/60-15 140/80-15 Difference
Diameter inches (mm) 22.56 (573) 23.82 (605) 1.26 (32) 5.6%
Width inches (mm) 6.3 (160) 5.51 (140) -0.79 (-20) -12.5%
Circum. inches (mm) 70.87 (1800.13) 74.83 (1900.66) 3.96 (100.53) 5.6%
Sidewall Height inches (mm) 3.78 (96) 4.41 (112) 0.63 (16) 16.7%
Revolutions per mile (km) 894.01 (555.51) 846.73 (526.13) -47.29 (-29.38) -5.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.12 mph (33.98 km/h)
25 mph (40.23 km/h)26.4 mph (42.48 km/h)
30 mph (48.28 km/h)31.68 mph (50.98 km/h)
35 mph (56.33 km/h)36.95 mph (59.47 km/h)
40 mph (64.37 km/h)42.23 mph (67.97 km/h)
45 mph (72.42 km/h)47.51 mph (76.47 km/h)
50 mph (80.47 km/h)52.79 mph (84.96 km/h)
55 mph (88.51 km/h)58.07 mph (93.46 km/h)
60 mph (96.56 km/h)63.35 mph (101.95 km/h)
65 mph (104.61 km/h)68.63 mph (110.45 km/h)
70 mph (112.65 km/h)73.91 mph (118.95 km/h)
75 mph (120.7 km/h)79.19 mph (127.44 km/h)
80 mph (128.75 km/h)84.47 mph (135.94 km/h)
85 mph (136.79 km/h)89.75 mph (144.43 km/h)
90 mph (144.84 km/h)95.03 mph (152.93 km/h)
95 mph (152.89 km/h)100.31 mph (161.43 km/h)
100 mph (160.93 km/h)105.58 mph (169.92 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
21552503269628152943303531363255342035853769391541814475470448514933523656576574
Better Fuel Economy Factory Ratios Increased Power

Most Popular 160/60-R15 Comparisons

To Top