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 245/95r14 Tire Comparison Side By Side
  185/95-14 245/95-14 Difference
Diameter inches (mm) 27.84 (707.1) 32.33 (821.1) 4.49 (114) 16.1%
Width inches (mm) 7.28 (185) 9.65 (245) 2.36 (60) 32.4%
Circum. inches (mm) 87.46 (2221.42) 101.56 (2579.56) 14.1 (358.14) 16.1%
Sidewall Height inches (mm) 6.92 (175.75) 9.16 (232.75) 2.24 (57) 32.4%
Revolutions per mile (km) 724.47 (450.16) 623.88 (387.66) -100.58 (-62.5) -13.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.22 mph (37.38 km/h)
25 mph (40.23 km/h)29.03 mph (46.72 km/h)
30 mph (48.28 km/h)34.84 mph (56.06 km/h)
35 mph (56.33 km/h)40.64 mph (65.41 km/h)
40 mph (64.37 km/h)46.45 mph (74.75 km/h)
45 mph (72.42 km/h)52.25 mph (84.1 km/h)
50 mph (80.47 km/h)58.06 mph (93.44 km/h)
55 mph (88.51 km/h)63.87 mph (102.78 km/h)
60 mph (96.56 km/h)69.67 mph (112.13 km/h)
65 mph (104.61 km/h)75.48 mph (121.47 km/h)
70 mph (112.65 km/h)81.29 mph (130.82 km/h)
75 mph (120.7 km/h)87.09 mph (140.16 km/h)
80 mph (128.75 km/h)92.9 mph (149.5 km/h)
85 mph (136.79 km/h)98.7 mph (158.85 km/h)
90 mph (144.84 km/h)104.51 mph (168.19 km/h)
95 mph (152.89 km/h)110.32 mph (177.54 km/h)
100 mph (160.93 km/h)116.12 mph (186.88 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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