im about to upgrade my coupe with some 19's and i know my ride height wont be the same. my question is, what springs out there would keep that stock feel without being bumpy because the stock ride is so smooth. i still wanna keep that luxury feel thats why.

ride height wont change if your get the correct tire size.

i got 18s though.

search on " brake and suspension" i think this is already covered...but it wont make a huge diff, you are coming from 18's to 19's on stock suspension and the clearences will be ok...

Check out Espelir springs. I have them and like them alot... I did not want to low of a drop because this is my Daily Driver and I did not want to worry about bottoming out all the time...

The drop on these were perfect for me and they handle great!

Here is a link.... Google them as well and read up on them.

http://www.optionimports.com/espelir-gt-springs.html

^^^ which ones? theres 2 types, GT racing Springs, and the regular racing springs?

The link I posted takes you right to em....

Active GT's

I been really impressed with the Swift Sport Mach Springs, they give you a slight drop and even though the spring rates are lower than the non-sport suspension they give you better handling and IMO a better ride quality than stock. If you wanted higher springs rates you could go with the Swift Z application. Also, because of the slight drop I've been using my stock shocks and the other reason I believe they give such a great ride is that they are linear springs. My commuter car an 03 Altima, I have the Eibach Prokit which are progressive springs and they don't give nearly the ride quality that the Swift springs do. With the Prokit they are very bouncy so you need a shock that is kinda firm particularly on the rebound side which takes away from the ride quality. Progressive springs as they compress the spring rates go up which makes handling more difficult, not as predictable. FYI, Swift spring in Japan are the most popular aftermarket springs, just not as popular here probably because of the cost factor.