For what reason do the front tyres of semitrucks typically feature spikes?

Spikes are commonly attached to the sides of the front tyres of semi trucks to prevent skidding on snowy roads.

In regions where slippery and dangerous winter roads are common, semis have wheel spikes installed.

When these wheel spikes make contact with the road,

tiny bits of ice are created,

which help the tyres grip the pavement and stop the wheels from sliding.

When driving on dry roads, wheel spikes also have little to no effect on performance or fuel economy.

To sum up, wheel spikes' primary function is to improve a vehicle's directional stability and prevent skidding on icy roads.