Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
150/70r13 vs 150/60r13 Tire Comparison Side By Side
  150/70-13 150/60-13 Difference
Diameter inches (mm) 21.27 (540.2) 20.09 (510.2) -1.18 (-30) -5.6%
Width inches (mm) 5.91 (150) 5.91 (150) 0 (0) 0%
Circum. inches (mm) 66.81 (1697.09) 63.1 (1602.84) -3.71 (-94.25) -5.6%
Sidewall Height inches (mm) 4.13 (105) 3.54 (90) -0.59 (-15) -14.3%
Revolutions per mile (km) 948.3 (589.24) 1004.06 (623.89) 55.76 (34.65) 5.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.89 mph (30.4 km/h)
25 mph (40.23 km/h)23.61 mph (38 km/h)
30 mph (48.28 km/h)28.33 mph (45.6 km/h)
35 mph (56.33 km/h)33.06 mph (53.2 km/h)
40 mph (64.37 km/h)37.78 mph (60.8 km/h)
45 mph (72.42 km/h)42.5 mph (68.4 km/h)
50 mph (80.47 km/h)47.22 mph (76 km/h)
55 mph (88.51 km/h)51.95 mph (83.6 km/h)
60 mph (96.56 km/h)56.67 mph (91.2 km/h)
65 mph (104.61 km/h)61.39 mph (98.8 km/h)
70 mph (112.65 km/h)66.11 mph (106.4 km/h)
75 mph (120.7 km/h)70.83 mph (114 km/h)
80 mph (128.75 km/h)75.56 mph (121.6 km/h)
85 mph (136.79 km/h)80.28 mph (129.2 km/h)
90 mph (144.84 km/h)85 mph (136.8 km/h)
95 mph (152.89 km/h)89.72 mph (144.4 km/h)
100 mph (160.93 km/h)94.45 mph (152 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 150/70-R13 Comparisons

To Top