Aftermarket spring airbags: anyone used em?

[oztme]

Hi,

I don't have self levelling suspension (not a big seller here in Australia). I would like to be able to pump up the rear of my e53 a little when I am towing the rally car.

I have seen these on some cars, which you put inside the existing coil springs, and they help the spring a bit. ie: you keep your existing springs, and put some air in these when you want slightly harder spring rate..


Sold here: Suspension/Chassis: CTS-V Air Bags for Rear Coil Springs

Has anyone used something like this on an e53 rear?

I don't care if they're inconvenient to inflate/deflate: I'd only use them once a month or so; and have an air compressor handy anyway for the rally car...

I did a search on the forum, but couldn't find anything except references to the factory self-levelling stuff, which is WAY out of my pricerange as a dealer/indy fit...

Cheers + thanks,
Scott.