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I had my son (6' x 100kg) roll the bike down the driveway, weight the front wheel, and slam the front brakes on to load the forks as much as possible, and we ended up using all but the last 32mm (1 1/4") of travel.
This was good enough for me as the last bit of travel would place the tire on about the same (or reducing) trajectory and would not get any closer to the bash plate.
That said, it is damn close now and would absolutely hit with a new tire.
Unfortunately the last pic is the one that I really wanted as clear as possible. As Murphy's Law would have it this turns out to be the shitty one.
You get the message though and can see that there is only a whisker in it.
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