it depends on a variety of things. when I had eibachs installed I had the same worries. but other than that everything seemed smooth til i upgraded to coils.
IMO I just say you save up for coilovers. Theres many more benefits.
1. You replace the entire strut and spring system. so if anything ever happens with your coils, you still have your old struts/springs you can put back on.
2. Fully adjustable. Eibachs gives you the certain drop limit. So no adjusting when it comes to winter.. road trips... etc.
3. SO MUCH EASIER TO INSTALL. trust me I hand installed both my eibachs and coilovers.
4. The sexy stance.....imo you just can't get with springs.
Just in general you can work better and have more control over your suspension. but if you don't want to spend the extra $$ I say go with eibachs. but there is no certain or legitimate answer of what can/will happen. But a member here did get a full replacement for his springs when something happened to his eibachs.. they have really good customer service.
Good luck!
