Like I said, its my opinion they work ok in certain conditions. I had no issues with them at all. I use my vehicle in all sorts of conditions including some pretty rough trails. After installing my 1.5 inch lift spacers, my truck actually felt a little better on road. If you really want to talk to someone who knows, call or e-mail Todd @ toddcosuspensions.com. They produce these lifts and have been real helpful in my process of building my Disco.