Air Shocks
Safety Car
Joined: Aug 2009
Posts: 3,751
Likes: 275
From: Melbourne, Victoria, Australia
Le Mans Master
Joined: Oct 2004
Posts: 7,706
Likes: 485
From: Everett WA
C4 of Year Finalist (appearance mods) 2019
Thank you for explaining why
It was a reasonable question. I've driven over 100K in my C4 at the stock suspension heights. Frankly if there was a way to easily lower the suspension 2 inches when the roads permit or at a show it would be something to consider.
Le Mans Master
Joined: Aug 2015
Posts: 6,090
Likes: 1,972
From: St. Charles MO
I'd be less worried about alignment changes and more worried about the spring rates you create with air shocks. Keep in mind that air shocks aren't dampers that work on air, they are normal hydraulic dampers that have air springs added inside. When you raise the ride height at one end, you're adding preload to those air springs and removing preload from the stock leaf springs (or coil springs in many other cars). The potential problem is that the leaf springs are linear rate: no matter where the wheels are in their range of suspension travel, the spring rate remains the same. OTOH, air springs are progressive, and with a high rate of progression (every time their volume halves, the spring rate doubles). You end up with spring rates varying all over the map as the suspension moves around during normal driving. The result is non-linear handling.
