My car is a daily driven car(winters as well) but is occasionally tracked, auto-x every month or so(during the summer) and probably 1-3 lapping days a year. I was already impressed with the stock suspension on my first lapping day and auto-x with the car, I was just looking for something that would increase the performance and plant the car down a bit more. I only got the springs b/c I got a very good deal on them and I know that the death of my stock shocks will be coming soon, probably by next season. I know it's not as big of a difference since the stock suspension is already very good, but I didn't find the need to increase the performance much much more. I still yet have to test the springs on the track.