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 185/65r14 Tire Comparison Side By Side
  185/95-14 185/65-14 Difference
Diameter inches (mm) 27.84 (707.1) 23.47 (596.1) -4.37 (-111) -15.7%
Width inches (mm) 7.28 (185) 7.28 (185) 0 (0) 0%
Circum. inches (mm) 87.46 (2221.42) 73.73 (1872.7) -13.73 (-348.72) -15.7%
Sidewall Height inches (mm) 6.92 (175.75) 4.73 (120.25) -2.19 (-55.5) -31.6%
Revolutions per mile (km) 724.47 (450.16) 859.37 (533.99) 134.9 (83.82) 18.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)16.86 mph (27.13 km/h)
25 mph (40.23 km/h)21.08 mph (33.92 km/h)
30 mph (48.28 km/h)25.29 mph (40.7 km/h)
35 mph (56.33 km/h)29.51 mph (47.48 km/h)
40 mph (64.37 km/h)33.72 mph (54.27 km/h)
45 mph (72.42 km/h)37.94 mph (61.05 km/h)
50 mph (80.47 km/h)42.15 mph (67.84 km/h)
55 mph (88.51 km/h)46.37 mph (74.62 km/h)
60 mph (96.56 km/h)50.58 mph (81.4 km/h)
65 mph (104.61 km/h)54.8 mph (88.19 km/h)
70 mph (112.65 km/h)59.01 mph (94.97 km/h)
75 mph (120.7 km/h)63.23 mph (101.75 km/h)
80 mph (128.75 km/h)67.44 mph (108.54 km/h)
85 mph (136.79 km/h)71.66 mph (115.32 km/h)
90 mph (144.84 km/h)75.87 mph (122.1 km/h)
95 mph (152.89 km/h)80.09 mph (128.89 km/h)
100 mph (160.93 km/h)84.3 mph (135.67 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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