Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/80r15 vs 140/80r19 Tire Comparison Side By Side
  130/80-15 140/80-19 Difference
Diameter inches (mm) 23.19 (589) 27.82 (706.6) 4.63 (117.6) 20%
Width inches (mm) 5.12 (130) 5.51 (140) 0.39 (10) 7.7%
Circum. inches (mm) 72.85 (1850.4) 87.4 (2219.85) 14.55 (369.45) 20%
Sidewall Height inches (mm) 4.09 (104) 4.41 (112) 0.31 (8) 7.7%
Revolutions per mile (km) 869.73 (540.42) 724.98 (450.48) -144.75 (-89.94) -16.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.99 mph (38.61 km/h)
25 mph (40.23 km/h)29.99 mph (48.27 km/h)
30 mph (48.28 km/h)35.99 mph (57.92 km/h)
35 mph (56.33 km/h)41.99 mph (67.57 km/h)
40 mph (64.37 km/h)47.99 mph (77.23 km/h)
45 mph (72.42 km/h)53.98 mph (86.88 km/h)
50 mph (80.47 km/h)59.98 mph (96.53 km/h)
55 mph (88.51 km/h)65.98 mph (106.19 km/h)
60 mph (96.56 km/h)71.98 mph (115.84 km/h)
65 mph (104.61 km/h)77.98 mph (125.49 km/h)
70 mph (112.65 km/h)83.98 mph (135.15 km/h)
75 mph (120.7 km/h)89.97 mph (144.8 km/h)
80 mph (128.75 km/h)95.97 mph (154.45 km/h)
85 mph (136.79 km/h)101.97 mph (164.11 km/h)
90 mph (144.84 km/h)107.97 mph (173.76 km/h)
95 mph (152.89 km/h)113.97 mph (183.41 km/h)
100 mph (160.93 km/h)119.97 mph (193.07 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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