Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
185/95r14 vs 205/75r14 Tire Comparison Side By Side
  185/95-14 205/75-14 Difference
Diameter inches (mm) 27.84 (707.1) 26.11 (663.1) -1.73 (-44) -6.2%
Width inches (mm) 7.28 (185) 8.07 (205) 0.79 (20) 10.8%
Circum. inches (mm) 87.46 (2221.42) 82.02 (2083.19) -5.44 (-138.23) -6.2%
Sidewall Height inches (mm) 6.92 (175.75) 6.05 (153.75) -0.87 (-22) -12.5%
Revolutions per mile (km) 724.47 (450.16) 772.54 (480.03) 48.07 (29.87) 6.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.76 mph (30.18 km/h)
25 mph (40.23 km/h)23.44 mph (37.73 km/h)
30 mph (48.28 km/h)28.13 mph (45.28 km/h)
35 mph (56.33 km/h)32.82 mph (52.82 km/h)
40 mph (64.37 km/h)37.51 mph (60.37 km/h)
45 mph (72.42 km/h)42.2 mph (67.91 km/h)
50 mph (80.47 km/h)46.89 mph (75.46 km/h)
55 mph (88.51 km/h)51.58 mph (83.01 km/h)
60 mph (96.56 km/h)56.27 mph (90.55 km/h)
65 mph (104.61 km/h)60.96 mph (98.1 km/h)
70 mph (112.65 km/h)65.64 mph (105.64 km/h)
75 mph (120.7 km/h)70.33 mph (113.19 km/h)
80 mph (128.75 km/h)75.02 mph (120.74 km/h)
85 mph (136.79 km/h)79.71 mph (128.28 km/h)
90 mph (144.84 km/h)84.4 mph (135.83 km/h)
95 mph (152.89 km/h)89.09 mph (143.37 km/h)
100 mph (160.93 km/h)93.78 mph (150.92 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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