I don't have any first hand knowledge of the spring snapping but isn't it the case that the lower spring retaining cup is the item that corrodes
View attachment 22717
Lower cup shown here
After all, being horizontal, it's in a prime position to hold water and salt residue and when it corrodes enough the spring breaks through it on one side. It goes on a major tilt as it's not being secured squarely any more and it's the explosive force of the spring suddenly releasing and colliding with the damper perhaps or just that it's no longer being held properly straight and square that makes it break always in the same place?
Really nothing to do with corrosion of the actual spring?
Fiat says its corrosion which causes the spring to snap but maybe it's not corrosion to the spring itself
Just asking, as I have no idea apart from a difficulty in believing that corrosion of the actual spring causes it to break
If it IS corrosion of the lower securing cup then the mod would actually stop the spring getting past the lower cup and therefore stop the spring breaking and the securing fingers would prevent a broken spring contacting the tyre if it did
Just my opinion- over here in the bunker- tin hat on- coffee flask out