How exactly do tire chains help when roads are icy?

Question

How exactly do tire chains help when roads are icy?

In: Other

Answer 1

Spikes on the tires work in a similar way, however they are fixed. Chains on the other hand, can be removed once winter is over.

Answer 2

metal (chains) will scrape and break ice much easier than just rubber will. rubber is also a much smoother surface than braided steel.