Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/70r17 vs 130/80r17 Tire Comparison Side By Side
  130/70-17 130/80-17 Difference
Diameter inches (mm) 24.17 (613.8) 25.19 (639.8) 1.02 (26) 4.2%
Width inches (mm) 5.12 (130) 5.12 (130) 0 (0) 0%
Circum. inches (mm) 75.92 (1928.31) 79.13 (2009.99) 3.22 (81.68) 4.2%
Sidewall Height inches (mm) 3.58 (91) 4.09 (104) 0.51 (13) 14.3%
Revolutions per mile (km) 834.59 (518.59) 800.67 (497.51) -33.92 (-21.07) -4.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.85 mph (33.55 km/h)
25 mph (40.23 km/h)26.06 mph (41.94 km/h)
30 mph (48.28 km/h)31.27 mph (50.33 km/h)
35 mph (56.33 km/h)36.48 mph (58.71 km/h)
40 mph (64.37 km/h)41.69 mph (67.1 km/h)
45 mph (72.42 km/h)46.91 mph (75.49 km/h)
50 mph (80.47 km/h)52.12 mph (83.88 km/h)
55 mph (88.51 km/h)57.33 mph (92.26 km/h)
60 mph (96.56 km/h)62.54 mph (100.65 km/h)
65 mph (104.61 km/h)67.75 mph (109.04 km/h)
70 mph (112.65 km/h)72.97 mph (117.43 km/h)
75 mph (120.7 km/h)78.18 mph (125.81 km/h)
80 mph (128.75 km/h)83.39 mph (134.2 km/h)
85 mph (136.79 km/h)88.6 mph (142.59 km/h)
90 mph (144.84 km/h)93.81 mph (150.98 km/h)
95 mph (152.89 km/h)99.02 mph (159.36 km/h)
100 mph (160.93 km/h)104.24 mph (167.75 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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