Ok, I've been driving with these installed for two days. I will say it does make a difference. Does it turn your Smart into a Cadillac? No. I have noticed a cushioning over the potholes. It also seems to quiet the front end when hitting the bumps. The install was very easy. I removed the first wheel but there is plenty of room after you just jack up the car to take tension off the spring. Total install of the second was about 2 minutes. Use soapy water to lubricate and they slip right on. Put them in the center of the spring (they screw up and down on the spring like a nut on a bolt) use wire ties to hold them in place and you are done. It raised my height by 1/4 inch.
