Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
100/85r19 vs 130/50r10 Tire Comparison Side By Side
  100/85-19 130/50-10 Difference
Diameter inches (mm) 25.69 (652.6) 15.12 (384) -10.57 (-268.6) -41.2%
Width inches (mm) 3.94 (100) 5.12 (130) 1.18 (30) 30%
Circum. inches (mm) 80.72 (2050.2) 47.49 (1206.37) -33.22 (-843.83) -41.2%
Sidewall Height inches (mm) 3.35 (85) 2.56 (65) -0.79 (-20) -23.5%
Revolutions per mile (km) 784.97 (487.76) 1334.04 (828.93) 549.07 (341.17) 69.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)11.77 mph (18.94 km/h)
25 mph (40.23 km/h)14.71 mph (23.67 km/h)
30 mph (48.28 km/h)17.65 mph (28.41 km/h)
35 mph (56.33 km/h)20.59 mph (33.14 km/h)
40 mph (64.37 km/h)23.54 mph (37.88 km/h)
45 mph (72.42 km/h)26.48 mph (42.61 km/h)
50 mph (80.47 km/h)29.42 mph (47.35 km/h)
55 mph (88.51 km/h)32.36 mph (52.08 km/h)
60 mph (96.56 km/h)35.3 mph (56.82 km/h)
65 mph (104.61 km/h)38.25 mph (61.55 km/h)
70 mph (112.65 km/h)41.19 mph (66.29 km/h)
75 mph (120.7 km/h)44.13 mph (71.02 km/h)
80 mph (128.75 km/h)47.07 mph (75.76 km/h)
85 mph (136.79 km/h)50.02 mph (80.49 km/h)
90 mph (144.84 km/h)52.96 mph (85.23 km/h)
95 mph (152.89 km/h)55.9 mph (89.96 km/h)
100 mph (160.93 km/h)58.84 mph (94.7 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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