Contact your service manager - I believe there is a TSB to replace the b-pillar column facing, if this is the area you're talking about. Something about us fat-butt American's rubbing up against it too many times when we get in and out of the car (my assesment, not the service managers'...)
hahahahhaha. it should be normal wear and tear but if it bothers you, as it would me, just bring it over to Lexus