I did have lowered Eibach Pro Kit springs on stock shocks. I drove like this for about 30,000kms with no problems with failing stock shocks. The main concern was that the stock shocks did not perform well with lowered springs and gave quite a rough ride. Just installed Bilstein shocks to match the Eibach springs and wow what a difference in ride smoothness and handling. If you want a better handling and more comfortable setup go for a well regarded spring/shock combination such as Eibach and Bilstein, you will be happy in the long run.