I recently bought an is350 f sport 2014 RWD and want to install something to lower it. I was looking at the RSR Superdowns or the OEM F-Sport Blue lowering springs, i’m also not sure what spacers to get. I wanted to know about the long term reliability of the springs and how to get the ideal fit, here are some images of what I am trying to achieve

This but slightly higher, the other images won’t upload lol but this site called “tanabe” has the ideal fit, if you search tanabe lexus is350 f sport 2014 lowering springs, the white one is what i’m trying to achieve

 

 

are you rubbing and how is the long term with the springs? what should I know especially for maintainence and stuff

 

I used this guide and same springs(shown in video)
very little rubbing with 15mm spacers. I honestly love the ride, it rides firm yet smooth.