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The tire pressure directly affects the surface area of the tire making contact with the road... an underinflated tire has a wider aspect ratio against the road. This reduces ground pressure, which means that the weight of the vehicle is distributed over a wider area of the surface being driven on than a properly inflated tire. While this is desirable for something like mud bogging, what it means on a regular roadway - especially in inclement weather - is reduced traction, skid control, and handling.

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8y ago
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8y ago

Lowering the tire pressure increases traction on loose materials like sand or on a drag strip. The traction is increased because the tire's "contact Patch" the amount of tire in contact with the ground is increased.

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Q: How does tire presser affect traction?
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