E70 X5 Helping Spring Towing Load Option

[Socale39]

I've been thinking of various ways to get the best lowered suspension I can without dropping $3-5k on full air suspension setup. As some of you know I have been already testing various setups with my non-Adaptive drive equipped 35d. I think unlike most owners, I will occasionally tow and when doing so the rear tends to sag a bit. There's been two thoughts running through my head lately and that is to either fit oem Arnott bags in place of my springs and use a universal air pump setup, or I've been thinking about trying helper springs that will allow me to manually add air when towing. Seeing as I don't car to slam my car or adjust its height on the fly, I feel like this would be a cheap yet efficient way to help for those days I tow.

According to my research this alternative is about $100 vs the $500-$800 option of adding arnott setup in the rear with a universal air pump setup (with no tank). Additionally the installation is rather straight forward and doesn't require removal of any suspension components. Once the bags are in place it's just a matter of routing the air line.

So, in putting this information out there I wanted to see if anyone here can share any experience with helper springs and what you guys' overall feedback is to the idea...

Thanks in advance.