It rides fine. You're hearing a lot of extremes here. I've had them in my car for 4 years through rough winters, even ice fishing. Yes, my lowered G drove onto a frozen lake and had no issues. What little you lose in comfort, you seriously make up in performance. The car turns better, feels more planted and secure. All depends on where your evaluation of value falls, more towards comfort and OEM ride vs performance and sportiness with a noisier and rougher ride. While I do regret not going for coils, it's not enough regret to start thinking I made a mistake.

 

Thanks! I keep hearing that the ride isn't that much harsher than the stock Sport suspension.

I have bought swifts already...But never actually driven my G37S yet. So I'll have to make the assessment when I finally do.

 

Im very particular with my car and ride comfort.
Adding only swift springs to an otherwise all stock car made little difference in ride quality.
The alignment was only slightly out of spec when complete.
Adding larger rims made a significant difference. Much more than the swift springs did.