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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
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27/8.5r14 vs 225/70r14 Tire Comparison Side By Side
  27/8.5-14 225/70-14 Difference
Diameter inches (mm) 26.93 (683.92) 26.4 (670.6) -0.52 (-13.32) -1.9%
Width inches (mm) 8.5 (216) 8.86 (225) 0.35 (9) 4.2%
Circum. inches (mm) 84.59 (2148.6) 82.94 (2106.75) -1.65 (-41.85) -1.9%
Sidewall Height inches (mm) 6.46 (164.16) 6.2 (157.5) -0.26 (-6.66) -4.1%
Revolutions per mile (km) 749.02 (465.42) 763.9 (474.66) 14.88 (9.24) 2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.61 mph (31.56 km/h)
25 mph (40.23 km/h)24.51 mph (39.45 km/h)
30 mph (48.28 km/h)29.42 mph (47.34 km/h)
35 mph (56.33 km/h)34.32 mph (55.23 km/h)
40 mph (64.37 km/h)39.22 mph (63.12 km/h)
45 mph (72.42 km/h)44.12 mph (71.01 km/h)
50 mph (80.47 km/h)49.03 mph (78.9 km/h)
55 mph (88.51 km/h)53.93 mph (86.79 km/h)
60 mph (96.56 km/h)58.83 mph (94.68 km/h)
65 mph (104.61 km/h)63.73 mph (102.57 km/h)
70 mph (112.65 km/h)68.64 mph (110.46 km/h)
75 mph (120.7 km/h)73.54 mph (118.35 km/h)
80 mph (128.75 km/h)78.44 mph (126.24 km/h)
85 mph (136.79 km/h)83.34 mph (134.13 km/h)
90 mph (144.84 km/h)88.25 mph (142.02 km/h)
95 mph (152.89 km/h)93.15 mph (149.91 km/h)
100 mph (160.93 km/h)98.05 mph (157.8 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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