I bought these for my 2005 Cadillac CTS-V to help me on the track. They are super tight on the road, lending to a slightly rough ride, but it's refreshing being able to feel the road. My lateral g-force gauge never broke 1.0g either left nor right in my entire 12+ year history owning the car, and after many track events. After my last race, my readings were 1.16g left and 1.08 right. So, with no other modifications, I was able to pick up at least 016g and 0.08g respectively and that shaves time off the track. I was able to take the corners much faster than I had before due to this suspension. Regular street driving is rather nice too, as I said, it's very tight now. I only lowered the front about 1" and maybe 1.25" in the rear, but you can slam it a few more inches if you like (but I can't guarantee the tires won't rub). All in all, I am very satisfied with these racing coil-overs. Also please note, that only the front are true coil-overs, the rear are separate spring and strut, but they work nonetheless!