Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
150/70r13 vs 160/60r13 Tire Comparison Side By Side
  150/70-13 160/60-13 Difference
Diameter inches (mm) 21.27 (540.2) 20.56 (522.2) -0.71 (-18) -3.3%
Width inches (mm) 5.91 (150) 6.3 (160) 0.39 (10) 6.7%
Circum. inches (mm) 66.81 (1697.09) 64.59 (1640.54) -2.23 (-56.55) -3.3%
Sidewall Height inches (mm) 4.13 (105) 3.78 (96) -0.35 (-9) -8.6%
Revolutions per mile (km) 948.3 (589.24) 980.98 (609.55) 32.69 (20.31) 3.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.33 mph (31.11 km/h)
25 mph (40.23 km/h)24.17 mph (38.89 km/h)
30 mph (48.28 km/h)29 mph (46.67 km/h)
35 mph (56.33 km/h)33.83 mph (54.45 km/h)
40 mph (64.37 km/h)38.67 mph (62.23 km/h)
45 mph (72.42 km/h)43.5 mph (70.01 km/h)
50 mph (80.47 km/h)48.33 mph (77.79 km/h)
55 mph (88.51 km/h)53.17 mph (85.56 km/h)
60 mph (96.56 km/h)58 mph (93.34 km/h)
65 mph (104.61 km/h)62.83 mph (101.12 km/h)
70 mph (112.65 km/h)67.67 mph (108.9 km/h)
75 mph (120.7 km/h)72.5 mph (116.68 km/h)
80 mph (128.75 km/h)77.33 mph (124.46 km/h)
85 mph (136.79 km/h)82.17 mph (132.24 km/h)
90 mph (144.84 km/h)87 mph (140.01 km/h)
95 mph (152.89 km/h)91.83 mph (147.79 km/h)
100 mph (160.93 km/h)96.67 mph (155.57 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
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