19's will make your brakes look tiny, and your fender gap look huge, but...
the V715 is a lip-style wheel. lip-style wheels in 18's appear, optically, smaller than they really are. if you plan to go with the V715, please make it 19". i promise you'll regret it otherwise. you might consider a lemans style wheel instead though, as there are more spokes to hide the tiny brake effect.
also, don't forget to plan for an alignment after your install. adding an aggressive offset (a lower et number) will give you toe out (negative toe) in front. this is not so good. so make sure your bank account has enough in it to compensate for that.
typically, "bumpy" is not what i would call stock sports suspension. i'd say it's more "sharp". ditching the runflats will dramatically reduce the jarring sensation. it will also mean you'll need an ///m mobility kit, in case you have a flat.
also... welcome to zpost!
