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Tire Pressure Science Poorly Inflated

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This is what the crayon line looks like if your tire is over-inflated. Notice the crayon remaining on the outer edge of the tire. Under-inflated would be the exact opposite of this, with the line worn from the edges (not from the middle).
Tire Pressure Tips - Air Pressure Science

 This is what the crayon line looks like if your tire is over-inflated. Notice the crayon remaining on the outer edge of the tire. Under-inflated would be the exact opposite of this, with the line worn from the edges (not from the middle).  View Related Article

 

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