3rdGenLexus

I have 19" wheels. I would not go over 19" wheels on a Lexus. Ride quality is not much of a difference but if you if that you are getting some vibration you might need some wheel spacer. some aftermarket wheels sometimes come with bigger space on the center of the wheel which causes it to get the vibration. you can buy the spacer for less then 15 dollar at a part store. no big deal. Just make sure you keep in mind that the smaller the wheel the fast you can take a sharp turn. the bigger the wheel the wider the turn the better.