Originally Posted by OldUKBikerGuy
I have yet to take my tyres off, but I guess the screws are just long enough to get a grip into the sidewall, yet not right through, for obvious reasons.
The tyre should be thick enough at this point to be able to estimate this, and the inner tube shouldn't be this low inside the tyre to be near the screw anyway.
The photo that Stretch67 posted above shows how it's done very well.....and if it works on dragsters, we should be OK!
When I said 'sidewall', I of course meant 'bead'. My bad.