Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/60r19 vs 100/90r19 Tire Comparison Side By Side
  130/60-19 100/90-19 Difference
Diameter inches (mm) 25.14 (638.6) 26.09 (662.6) 0.94 (24) 3.8%
Width inches (mm) 5.12 (130) 3.94 (100) -1.18 (-30) -23.1%
Circum. inches (mm) 78.99 (2006.22) 81.95 (2081.62) 2.97 (75.4) 3.8%
Sidewall Height inches (mm) 3.07 (78) 3.54 (90) 0.47 (12) 15.4%
Revolutions per mile (km) 802.18 (498.45) 773.12 (480.39) -29.06 (-18.05) -3.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.75 mph (33.4 km/h)
25 mph (40.23 km/h)25.94 mph (41.75 km/h)
30 mph (48.28 km/h)31.13 mph (50.09 km/h)
35 mph (56.33 km/h)36.32 mph (58.44 km/h)
40 mph (64.37 km/h)41.5 mph (66.79 km/h)
45 mph (72.42 km/h)46.69 mph (75.14 km/h)
50 mph (80.47 km/h)51.88 mph (83.49 km/h)
55 mph (88.51 km/h)57.07 mph (91.84 km/h)
60 mph (96.56 km/h)62.25 mph (100.19 km/h)
65 mph (104.61 km/h)67.44 mph (108.54 km/h)
70 mph (112.65 km/h)72.63 mph (116.89 km/h)
75 mph (120.7 km/h)77.82 mph (125.24 km/h)
80 mph (128.75 km/h)83.01 mph (133.59 km/h)
85 mph (136.79 km/h)88.19 mph (141.94 km/h)
90 mph (144.84 km/h)93.38 mph (150.28 km/h)
95 mph (152.89 km/h)98.57 mph (158.63 km/h)
100 mph (160.93 km/h)103.76 mph (166.98 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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