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 160/70r13 Tire Comparison Side By Side
  150/70-13 160/70-13 Difference
Diameter inches (mm) 21.27 (540.2) 21.82 (554.2) 0.55 (14) 2.6%
Width inches (mm) 5.91 (150) 6.3 (160) 0.39 (10) 6.7%
Circum. inches (mm) 66.81 (1697.09) 68.55 (1741.07) 1.73 (43.98) 2.6%
Sidewall Height inches (mm) 4.13 (105) 4.41 (112) 0.28 (7) 6.7%
Revolutions per mile (km) 948.3 (589.24) 924.34 (574.36) -23.96 (-14.89) -2.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.52 mph (33.02 km/h)
25 mph (40.23 km/h)25.65 mph (41.28 km/h)
30 mph (48.28 km/h)30.78 mph (49.53 km/h)
35 mph (56.33 km/h)35.91 mph (57.79 km/h)
40 mph (64.37 km/h)41.04 mph (66.04 km/h)
45 mph (72.42 km/h)46.17 mph (74.3 km/h)
50 mph (80.47 km/h)51.3 mph (82.55 km/h)
55 mph (88.51 km/h)56.43 mph (90.81 km/h)
60 mph (96.56 km/h)61.55 mph (99.06 km/h)
65 mph (104.61 km/h)66.68 mph (107.32 km/h)
70 mph (112.65 km/h)71.81 mph (115.57 km/h)
75 mph (120.7 km/h)76.94 mph (123.83 km/h)
80 mph (128.75 km/h)82.07 mph (132.08 km/h)
85 mph (136.79 km/h)87.2 mph (140.34 km/h)
90 mph (144.84 km/h)92.33 mph (148.59 km/h)
95 mph (152.89 km/h)97.46 mph (156.85 km/h)
100 mph (160.93 km/h)102.59 mph (165.11 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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