Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/60r16 vs 160/40r16 Tire Comparison Side By Side
  160/60-16 160/40-16 Difference
Diameter inches (mm) 23.56 (598.4) 21.04 (534.4) -2.52 (-64) -10.7%
Width inches (mm) 6.3 (160) 6.3 (160) 0 (0) 0%
Circum. inches (mm) 74.01 (1879.93) 66.1 (1678.87) -7.92 (-201.06) -10.7%
Sidewall Height inches (mm) 3.78 (96) 2.52 (64) -1.26 (-32) -33.3%
Revolutions per mile (km) 856.07 (531.93) 958.59 (595.64) 102.52 (63.7) 12%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.86 mph (28.74 km/h)
25 mph (40.23 km/h)22.33 mph (35.93 km/h)
30 mph (48.28 km/h)26.79 mph (43.12 km/h)
35 mph (56.33 km/h)31.26 mph (50.3 km/h)
40 mph (64.37 km/h)35.72 mph (57.49 km/h)
45 mph (72.42 km/h)40.19 mph (64.68 km/h)
50 mph (80.47 km/h)44.65 mph (71.86 km/h)
55 mph (88.51 km/h)49.12 mph (79.05 km/h)
60 mph (96.56 km/h)53.58 mph (86.23 km/h)
65 mph (104.61 km/h)58.05 mph (93.42 km/h)
70 mph (112.65 km/h)62.51 mph (100.61 km/h)
75 mph (120.7 km/h)66.98 mph (107.79 km/h)
80 mph (128.75 km/h)71.44 mph (114.98 km/h)
85 mph (136.79 km/h)75.91 mph (122.16 km/h)
90 mph (144.84 km/h)80.37 mph (129.35 km/h)
95 mph (152.89 km/h)84.84 mph (136.54 km/h)
100 mph (160.93 km/h)89.3 mph (143.72 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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