I have the widest ones, got it used from a pilot owner who got in a wreck. I dunno if my RTL was a bit more forgiving or what, but didn't need a ball joint tool to remove the old armrest, just apply firm outward pressure as you rotate the armrest and it should pop off. The widest one is a bit overkill, and if I were buying new I would get the smaller size. You have to slide the seatbelt fastener under the armrest to buckle, but other than that I haven't had any issues.