denwatson Posted March 18, 2008 Share Posted March 18, 2008 We have an '05 LS430 Ultra Luxury, Pre-Collision. This car is equipped with the air suspension system. It is not a pleasant ride. When driving over a typical speed bump in a parking lot at slow speed the car rocks violently side to side. It's a little better in the sport mode and much better at higher speeds. The problem seems to be at the rear end. No rocking when the front wheels go over the bump, only when the rear wheels make contact. Dealer can't find a problem. I have heard there is an air proportioning valve which moves air to the corner of the car requiring air or air dump. Anyone else experienced a similar problem? Quote Link to comment Share on other sites More sharing options...
gordonw Posted March 18, 2008 Share Posted March 18, 2008 You seem to be only mentioning the damping mode, but have tried putting both the damping mode and vehicle height adjustment on normal? Quote Link to comment Share on other sites More sharing options...
jcrome04 Posted March 18, 2008 Share Posted March 18, 2008 Bumps are more violent feeling at lower speeds, are you hitting the bump at an angle?? Air suspension is MUCH MUCH more superior and comfortable to a traditional setup. Quote Link to comment Share on other sites More sharing options...
denwatson Posted March 18, 2008 Author Share Posted March 18, 2008 You seem to be only mentioning the damping mode, but have tried putting both the damping mode and vehicle height adjustment on normal? Both are set to the normal position. The rocking is a little better in the sport position. Quote Link to comment Share on other sites More sharing options...
denwatson Posted March 18, 2008 Author Share Posted March 18, 2008 Bumps are more violent feeling at lower speeds, are you hitting the bump at an angle??Air suspension is MUCH MUCH more superior and comfortable to a traditional setup. That's what I thought too, hitting at an angle, but I've carefully made straight on contact and it still rocks. I sold a 99LS and bought the 05, I swear the 99 rode better. Quote Link to comment Share on other sites More sharing options...
SW03ES Posted March 18, 2008 Share Posted March 18, 2008 Bumps are more violent feeling at lower speeds, are you hitting the bump at an angle??Air suspension is MUCH MUCH more superior and comfortable to a traditional setup. Actually I disagree. IMHO the standard suspension LS drives at least as well...if not better. Does your 05 have the 18inch wheels? Quote Link to comment Share on other sites More sharing options...
denwatson Posted March 19, 2008 Author Share Posted March 19, 2008 Bumps are more violent feeling at lower speeds, are you hitting the bump at an angle??Air suspension is MUCH MUCH more superior and comfortable to a traditional setup. Actually I disagree. IMHO the standard suspension LS drives at least as well...if not better. Does your 05 have the 18inch wheels? Yes, 18 wheels, low profile tires. Quote Link to comment Share on other sites More sharing options...
SW03ES Posted March 19, 2008 Share Posted March 19, 2008 Thats the difference you're seeing vs your 99. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.