QUOTE(NorthernIllinoisPlumber @ Feb 18 2010, 03:50 PM)
I saw those helper things you mentioned. After they are installed, how is the ride? Smooth or rough? Also, when do you take them out?
As far as rough/smooth ride, it doesn't seem to change the ride any in our Caravan, but I had just replaced the rear shocks on it as well.
Actually, I just left them on the van, because I have a utility trailer I use often, and it just saved time. They're not hard to put on or take off. If you plan a long break between towing, I would remove them, then.
Having them in will definately help with the bounce, or "porpoising" of the tow vehicle while towing. Far as I know, if left on when not towing, they will not cause damage, just makes the van look funny with the rear end higher in the air. lol