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 205/70r14 Tire Comparison Side By Side
  185/95-14 205/70-14 Difference
Diameter inches (mm) 27.84 (707.1) 25.3 (642.6) -2.54 (-64.5) -9.1%
Width inches (mm) 7.28 (185) 8.07 (205) 0.79 (20) 10.8%
Circum. inches (mm) 87.46 (2221.42) 79.48 (2018.79) -7.98 (-202.63) -9.1%
Sidewall Height inches (mm) 6.92 (175.75) 5.65 (143.5) -1.27 (-32.25) -18.3%
Revolutions per mile (km) 724.47 (450.16) 797.18 (495.35) 72.72 (45.18) 10%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.18 mph (29.25 km/h)
25 mph (40.23 km/h)22.72 mph (36.56 km/h)
30 mph (48.28 km/h)27.26 mph (43.88 km/h)
35 mph (56.33 km/h)31.81 mph (51.19 km/h)
40 mph (64.37 km/h)36.35 mph (58.5 km/h)
45 mph (72.42 km/h)40.9 mph (65.81 km/h)
50 mph (80.47 km/h)45.44 mph (73.13 km/h)
55 mph (88.51 km/h)49.98 mph (80.44 km/h)
60 mph (96.56 km/h)54.53 mph (87.75 km/h)
65 mph (104.61 km/h)59.07 mph (95.07 km/h)
70 mph (112.65 km/h)63.61 mph (102.38 km/h)
75 mph (120.7 km/h)68.16 mph (109.69 km/h)
80 mph (128.75 km/h)72.7 mph (117 km/h)
85 mph (136.79 km/h)77.25 mph (124.32 km/h)
90 mph (144.84 km/h)81.79 mph (131.63 km/h)
95 mph (152.89 km/h)86.33 mph (138.94 km/h)
100 mph (160.93 km/h)90.88 mph (146.25 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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