I’ve replied on the springs issue several thousand times in the past, though it’s probably only been printed about half a dozen times. Many European springs are made to order by a company called Lesjofors in Sweden. A combination of things have happened. Manufacturers have cut the costs which means the springs are no longer finished at the ends by flattening, tapering or pigtailing. Combined with poor seating in the suspension cups of the cars to which they are fitted, this means forces are not evenly spread through the bases of the springs but are concentrated on the ends. The springs are not made of the best pure carbon steel and instead contain an element of scrap. The cups the springs sit in can get filled with salty mud in winter, which promoted corrosion of the springs at the ends. Shocks from speed humps then set up stress fractures. The springs usually break first thing in the morning when the springs are at their coolest and most brittle