I have the following wheels on my SC430 and nothing rubs, no contact with callipers, guards or dampers. They do not negatively affect the ride quality in my opinion. Not sure if this adds to the conversation but just sayin' .............
2016 Lexus RCF Rims
Front: 19 x 8" +45 offset Potenza 235/40/19
Rear: 19 x 9" +65 offset Potenza 265/35/19