I've only had it on the road for a couple of miles. I had to drive it just to get a feel for what the headers did for performance. The car seemed to handle fine with stock SVT springs, but a couple of miles is no test. I probably didn't need the dampening the Bilsteins provided considering I didn't change the springs, but I didn't want to lower the car . . . I'm already having problems getting the car on ramps for oil changes the way it is. You say you had Bilsteins installed on your car with the lowering springs . . . is the gap between the tire and the fender larger in the front than in the rear of the car? I bought the struts from BAT and Eric is really fighting the possiblilty of return. He says he's never heard of this problem. Have you ever called BAT to let them know about your experience with these struts?