The difference between WM type and MT type of the rims.
Image A WM type rim
In general, the role of a hump is to restrain the tire bead part in order to avoid bead drop when air leaves the tire, but as seen in the image below, if the air pressure is such that normal driving is possible, the bead part does not directly touch the hump, meaning that in the end the tire and wheel are joined together due to air pressure.
The weight of the bike + the body weight of the rider + the traction while driving cause the internal pressure of the tire to increase, and the beads become less likely to drop the more the tire is pressed against the road surface and flattened.
As you can see in the image below, during cornering the wheel is weighted by centrifugal force on the outside, maintaining the tire's grip, meaning that the rim is pressing the bead part of the tire in the direction of the white arrow.
The rim is pulling the side wall, and the side wall does not stretch, so the outside bead part is not burdened due to the deformation of the tire tread shape.
This driving image is from the Tsukuba Circuit, and the tire incorporates an OUTEX tubeless kit.
The air pressure at this time is set at 1.2kPa (17psi) cold, and the results of the race were a win and the establishment of a course record.
With tubeless tires, in most cases you can keep driving
as it is even if pierced by a nail, etc.
In rare cases air may gradually leak even with tubeless tires, but as the air pressure drops the handlebar will become harder to move and you will be unable to keep riding, so you could notice the problem immediately.
Due to the above facts, if you maintain regulation air
pressure, we think it is safe to say that there will be no difference between
WM and MT types as well as no fear of bead drop. However, when the bead part
has become rough it is necessary to repair it to a clean state, and it cannot
be said to be safe with all rims, so some workmanship is required.
Incidentally, this kit has been on sale for 9 years now and there has not been a rim that couldn't be installed on.