Have not done a full articulation test. But after install of 285s I did spend a week in New Mexico mountains on some pretty rough terrain...from NM CO border to roswell.
Did not have any issues. But since you asked I just took a look at my truck and took some pics for you. Keep in mind that I have the 285 70 duratacs which measure a full 33 od according to manufacturer. From what I can see it looks like the heat gun mod may have bounced back a bit. I drive pretty aggressive and don't slow down much for driveway transitons, speed bumps etc. As far as pushing wheel travel I have definitely pushed it...the kids like hitting transitions fast. Anyways, it looks like the rear of each well, the liner has sprung back a bit, maybe I did not get hot enough. You can see the obvious clean spots.. mine is a 20 model with the TSB fronts,, so the same as a 21. There is no rub on the front of wheel well. Hope this helps.

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