Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
150/80r16 vs 160/80r16 Tire Comparison Side By Side
  150/80-16 160/80-16 Difference
Diameter inches (mm) 25.45 (646.4) 26.08 (662.4) 0.63 (16) 2.5%
Width inches (mm) 5.91 (150) 6.3 (160) 0.39 (10) 6.7%
Circum. inches (mm) 79.95 (2030.73) 81.93 (2080.99) 1.98 (50.27) 2.5%
Sidewall Height inches (mm) 4.72 (120) 5.04 (128) 0.31 (8) 6.7%
Revolutions per mile (km) 792.5 (492.43) 773.35 (480.54) -19.14 (-11.89) -2.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.5 mph (32.98 km/h)
25 mph (40.23 km/h)25.62 mph (41.23 km/h)
30 mph (48.28 km/h)30.74 mph (49.48 km/h)
35 mph (56.33 km/h)35.87 mph (57.72 km/h)
40 mph (64.37 km/h)40.99 mph (65.97 km/h)
45 mph (72.42 km/h)46.11 mph (74.21 km/h)
50 mph (80.47 km/h)51.24 mph (82.46 km/h)
55 mph (88.51 km/h)56.36 mph (90.71 km/h)
60 mph (96.56 km/h)61.49 mph (98.95 km/h)
65 mph (104.61 km/h)66.61 mph (107.2 km/h)
70 mph (112.65 km/h)71.73 mph (115.44 km/h)
75 mph (120.7 km/h)76.86 mph (123.69 km/h)
80 mph (128.75 km/h)81.98 mph (131.93 km/h)
85 mph (136.79 km/h)87.1 mph (140.18 km/h)
90 mph (144.84 km/h)92.23 mph (148.43 km/h)
95 mph (152.89 km/h)97.35 mph (156.67 km/h)
100 mph (160.93 km/h)102.48 mph (164.92 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
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