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 140/90r16 Tire Comparison Side By Side
  160/60-16 140/90-16 Difference
Diameter inches (mm) 23.56 (598.4) 25.92 (658.4) 2.36 (60) 10%
Width inches (mm) 6.3 (160) 5.51 (140) -0.79 (-20) -12.5%
Circum. inches (mm) 74.01 (1879.93) 81.43 (2068.42) 7.42 (188.5) 10%
Sidewall Height inches (mm) 3.78 (96) 4.96 (126) 1.18 (30) 31.3%
Revolutions per mile (km) 856.07 (531.93) 778.05 (483.46) -78.01 (-48.48) -9.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.01 mph (35.41 km/h)
25 mph (40.23 km/h)27.51 mph (44.27 km/h)
30 mph (48.28 km/h)33.01 mph (53.12 km/h)
35 mph (56.33 km/h)38.51 mph (61.97 km/h)
40 mph (64.37 km/h)44.01 mph (70.83 km/h)
45 mph (72.42 km/h)49.51 mph (79.68 km/h)
50 mph (80.47 km/h)55.01 mph (88.54 km/h)
55 mph (88.51 km/h)60.51 mph (97.39 km/h)
60 mph (96.56 km/h)66.02 mph (106.24 km/h)
65 mph (104.61 km/h)71.52 mph (115.1 km/h)
70 mph (112.65 km/h)77.02 mph (123.95 km/h)
75 mph (120.7 km/h)82.52 mph (132.8 km/h)
80 mph (128.75 km/h)88.02 mph (141.66 km/h)
85 mph (136.79 km/h)93.52 mph (150.51 km/h)
90 mph (144.84 km/h)99.02 mph (159.36 km/h)
95 mph (152.89 km/h)104.53 mph (168.22 km/h)
100 mph (160.93 km/h)110.03 mph (177.07 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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