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 27/10r14 Tire Comparison Side By Side
  185/95-14 27/10-14 Difference
Diameter inches (mm) 27.84 (707.1) 27 (685.8) -0.84 (-21.3) -3%
Width inches (mm) 7.28 (185) 10 (254) 2.72 (69) 37.3%
Circum. inches (mm) 87.46 (2221.42) 84.82 (2154.5) -2.63 (-66.92) -3%
Sidewall Height inches (mm) 6.92 (175.75) 6.5 (165.1) -0.42 (-10.65) -6.1%
Revolutions per mile (km) 724.47 (450.16) 746.97 (464.14) 22.5 (13.98) 3.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.4 mph (31.22 km/h)
25 mph (40.23 km/h)24.25 mph (39.02 km/h)
30 mph (48.28 km/h)29.1 mph (46.83 km/h)
35 mph (56.33 km/h)33.95 mph (54.63 km/h)
40 mph (64.37 km/h)38.8 mph (62.43 km/h)
45 mph (72.42 km/h)43.64 mph (70.24 km/h)
50 mph (80.47 km/h)48.49 mph (78.04 km/h)
55 mph (88.51 km/h)53.34 mph (85.85 km/h)
60 mph (96.56 km/h)58.19 mph (93.65 km/h)
65 mph (104.61 km/h)63.04 mph (101.46 km/h)
70 mph (112.65 km/h)67.89 mph (109.26 km/h)
75 mph (120.7 km/h)72.74 mph (117.07 km/h)
80 mph (128.75 km/h)77.59 mph (124.87 km/h)
85 mph (136.79 km/h)82.44 mph (132.67 km/h)
90 mph (144.84 km/h)87.29 mph (140.48 km/h)
95 mph (152.89 km/h)92.14 mph (148.28 km/h)
100 mph (160.93 km/h)96.99 mph (156.09 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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