Keep billies with HR springs or BC coilover?

[ApexGoblin]

I have a dilemma. my 89 325is has billies sport shocks with HR springs on it currently. They are old and came with the car when I bought it but still handle pretty well, BUT I have been offered a BNIB set of BC coilovers for my car and was wondering if it is worth the extra cash to change over to that set up??

I mostly daily this car with spirited driving, canyon driving, and occasional auto x, maybe a track day in the future.

all opinions with logic to back it up are really appreciated! and no I am not going to slam my car. performance is the goal.

Thanks!

[ApexGoblin]

anyone....?

[Jaxx_]

The advantage of the coilovers would be that you can dictate the spring rates depending on how you drive the car, as well as what sways you have, and even weight balance. If you want to go through that, it can be a long process, but you would have a better setup car. I personally run H&R race with bilstein sports and an added rear sway from a 325i and it handles pretty much perfectly--extremely neutral with a hint of oversteer.

Until you feel you have maxed out the potential on the current setup I don't think it's worth spending extra cash and time to fit "higher performance" suspension to the car. BC coilovers are cheap coilovers anyway--no matter what people say they are single adjustable and bottom of the range.

The only advantage I see with having them is if you need to change your suspension setup on the fly, such as if you wanted to go to a drift event and wanted to slide easier and then drive home on some twisties without having the tail step out at every turn. This is just as possible with an adjustable rear sway.

[ApexGoblin]

The advantage of the coilovers would be that you can dictate the spring rates depending on how you drive the car, as well as what sways you have, and even weight balance. If you want to go through that, it can be a long process, but you would have a better setup car. I personally run H&R race with bilstein sports and an added rear sway from a 325i and it handles pretty much perfectly--extremely neutral with a hint of oversteer.

Until you feel you have maxed out the potential on the current setup I don't think it's worth spending extra cash and time to fit "higher performance" suspension to the car. BC coilovers are cheap coilovers anyway--no matter what people say they are single adjustable and bottom of the range.

The only advantage I see with having them is if you need to change your suspension setup on the fly, such as if you wanted to go to a drift event and wanted to slide easier and then drive home on some twisties without having the tail step out at every turn. This is just as possible with an adjustable rear sway.

That seems to be what I am gathering based on my searching as well. Thank you for taking to time to respond, I appreciate it!