Why do so many semis equip their front tyres with spikes?

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Spikes or metal spikes are commonly installed on the outer edges of

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the front tyres of semi-trucks. It's common to refer to these as tyre chains or snow flaps,

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and their purpose is to help vehicles gain traction and control in hazardous conditions.

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They also aid the truck driver in maintaining control of the vehicle in slippery or slick circumstances, such as during turning.

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Metal spikes embedded in the tyres provide traction,

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allowing the truck to keep its footing in slick weather. They help with stopping distances

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and cornering ability, especially in wet or slick conditions.

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