I've got a 2009 e92 325i. Went over a pothole on lovely British roads and it took out my rear dampers. I thought why not swap the fronts as well coz they'll need doing soon. I'm a mechanic but I know absolutely nothing about coilovers and swapping from factory setup to coils. I've been recommended BC Racing BR coilovers and HSD MonoPros but I have no idea which ones are the right fitment and what else I'll need to swap along with it. From what I've been told, i might need adjustable drop links but that's about it. Its on 18 inch wheels as the previous owner swapped them on from the factory 19s for some reasons so it sits lower as is but the fitment is horrible. So along with the suspension I'm swapping it back to wheels with the factory size.
These are the ones I've been sent but I don't know what swapping them entails -
Any advice would be greatly appreciated