For all you 19"ers out there, how much of a difference in ride quality is there...if any? Just would like to hear your thoughts. Thanks!

 

I've had both (Volk TE37 in 19" and currently 18" 5Zigen). The ride quality is more forgiving with the 18's running a 40 profile tire (plus much less worry over potholes). The car felt a bit sluggish with the 19's. On the other hand, I'm going to be going back to 19's (keep the 18's for track only) at some point cuz it looks so perfect for the Z.