went to try and upgrade my 14" doblo steelies to some 15" fiat alloys from scrapyard...but there are two spiked thingies on the hub for the steelies which i couldnt get off.

Are these important to keep on ?

as i might end up having to fit 15" steels from a multipla and no idea if those multipla steelies have spike holes in the same position as the doblos.