No, not harsh at all. Matter a fact normal driving they don't feel any different at all.
I couldn't believe it myself...in hard cornering you heel the grab of the rubber way more.
The lowering springs made it a little stiffer so with those it rides the same as my buddies ZO6 Vette.
I waited on getting bigger sway bars and glad I did because it would be to stiff for my taste...and to me it feels like it's on rails now.
I'll find out for sure in the next autocross I do with it.
I have Nitto's on it for rubber..they stick really good..better than the P Zeros.
I went with a 1" drop in the front and 1.3" in the back...just had enough camber adjustment to bring the wheels back to zero on the camber...so you could do 1.5 in the back without issues.
The springs took an 1 1/2 hours in my driveway...really EZ job. Get a low profile jack.
I have no issues with rubbing or bottom out, and I didn't cut my bump stops on my struts like they tell you to do.