Here is a pic. Not the best but looking at it in person, the slider will come in contact with the door before it impacts the FJ. The sliders stick out about as far as the plastic fenders do. Now if someone opens a rear door, I don't think that any slider will protect it because the rear door is formed around the rear wheel well.
Keep in mind that I am sitting at stock height (level lift up front). When I install a 3" lift I will be higher than most vehicles and for sure the sliders will protect. If this vehicle was raised, my FJ would have a nice ding

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2007 Silver Ti FJC, AT, Pre-Runner

/Gibson catback pipes and tip/ Flowmaster 40 Series/Airaid Intake/RC 3" Lift /Home fabricated Airdam/Cobra 19 DX IV and Bandi mount (Semi Big Bill Set Up)/Black Steelies/Hella 500 Lights mounted on OEM front bumper/Some decals…started a collection/Gobi Ladder/ Demello Jack Clamps/Demello tube sliders/Hi Lift jack & Daystar jack isolator/285/70/17 BF Goodrich AT KO