@RCF Fan depending age and mileage of your car to date, you might find new hardware for the calipers is due. It will also compliment your shiny new pad install.
Lexus want c£99 for each side! But fear not, a few of us purchased a full set from Rock Auto (no affiliation) for a fraction of the cost $15, despite shipping from US.
https://www.rockauto.com/en/catalog/lexus,2015,rc+f,5.0l+v8,3310304,brake+&+wheel+hub,disc+brake+hardware+kit,1736
I bought the Carlson brand, but cheaper variants are available now...