Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/80r16 vs 195/70r16 Tire Comparison Side By Side
  160/80-16 195/70-16 Difference
Diameter inches (mm) 26.08 (662.4) 26.75 (679.4) 0.67 (17) 2.6%
Width inches (mm) 6.3 (160) 7.68 (195) 1.38 (35) 21.9%
Circum. inches (mm) 81.93 (2080.99) 84.03 (2134.4) 2.1 (53.41) 2.6%
Sidewall Height inches (mm) 5.04 (128) 5.37 (136.5) 0.33 (8.5) 6.6%
Revolutions per mile (km) 773.35 (480.54) 754 (468.52) -19.35 (-12.02) -2.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.51 mph (33.01 km/h)
25 mph (40.23 km/h)25.64 mph (41.27 km/h)
30 mph (48.28 km/h)30.77 mph (49.52 km/h)
35 mph (56.33 km/h)35.9 mph (57.77 km/h)
40 mph (64.37 km/h)41.03 mph (66.03 km/h)
45 mph (72.42 km/h)46.15 mph (74.28 km/h)
50 mph (80.47 km/h)51.28 mph (82.53 km/h)
55 mph (88.51 km/h)56.41 mph (90.79 km/h)
60 mph (96.56 km/h)61.54 mph (99.04 km/h)
65 mph (104.61 km/h)66.67 mph (107.29 km/h)
70 mph (112.65 km/h)71.8 mph (115.55 km/h)
75 mph (120.7 km/h)76.92 mph (123.8 km/h)
80 mph (128.75 km/h)82.05 mph (132.05 km/h)
85 mph (136.79 km/h)87.18 mph (140.31 km/h)
90 mph (144.84 km/h)92.31 mph (148.56 km/h)
95 mph (152.89 km/h)97.44 mph (156.81 km/h)
100 mph (160.93 km/h)102.57 mph (165.06 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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