10mph - scuff? I am not concerned with the amount of tyre used on the street just trying to establish limits. The further you lean the greater the contact patch right up to the edge. I am just trying to work out how near the limit I am if the tyre scuff is 10mm of the edge. If an emergency arrises how much further can I tip the bike; alot or not much before I lowside?
If you corner smoothly on a good road surface, assuming no braking/throttle closing, and you drive through the turn on a slightly positive throttle, you will scrape something on the bike before you run out of available lean angle.
In an emergency: look through the corner to the exit, keep a positive throttle even if just a couple of hundred revs, and lean more if nothing is scraping.
In the UK the most common fatal bike accident is a single rider loosing it on a left hand bend, and sliding onto the other side of the road, to be hit by oncoming traffic. (We drive on the other side, remember). Moral: don't panic and keep leaning. Go to the track and learn how far over a modern bike will lean. BUT don't forget road surfaces aren't as good as racetracks. Less grip inherent in the road surface, more mud/leaves/mown grass/diesel, and 4 wheel morons.