Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/80r17 vs 150/80r17 Tire Comparison Side By Side
  130/80-17 150/80-17 Difference
Diameter inches (mm) 25.19 (639.8) 26.45 (671.8) 1.26 (32) 5%
Width inches (mm) 5.12 (130) 5.91 (150) 0.79 (20) 15.4%
Circum. inches (mm) 79.13 (2009.99) 83.09 (2110.52) 3.96 (100.53) 5%
Sidewall Height inches (mm) 4.09 (104) 4.72 (120) 0.63 (16) 15.4%
Revolutions per mile (km) 800.67 (497.51) 762.53 (473.82) -38.14 (-23.7) -4.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21 mph (33.8 km/h)
25 mph (40.23 km/h)26.25 mph (42.25 km/h)
30 mph (48.28 km/h)31.5 mph (50.7 km/h)
35 mph (56.33 km/h)36.75 mph (59.14 km/h)
40 mph (64.37 km/h)42 mph (67.59 km/h)
45 mph (72.42 km/h)47.25 mph (76.04 km/h)
50 mph (80.47 km/h)52.5 mph (84.49 km/h)
55 mph (88.51 km/h)57.75 mph (92.94 km/h)
60 mph (96.56 km/h)63 mph (101.39 km/h)
65 mph (104.61 km/h)68.25 mph (109.84 km/h)
70 mph (112.65 km/h)73.5 mph (118.29 km/h)
75 mph (120.7 km/h)78.75 mph (126.74 km/h)
80 mph (128.75 km/h)84 mph (135.19 km/h)
85 mph (136.79 km/h)89.25 mph (143.64 km/h)
90 mph (144.84 km/h)94.5 mph (152.09 km/h)
95 mph (152.89 km/h)99.75 mph (160.53 km/h)
100 mph (160.93 km/h)105 mph (168.98 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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