TIRE RETENTION AND COMPATIBILITY
Like any modern tubeless system, the tolerances of the tire bead diameter and hookless rim bead seat diameters must be carefully calibrated in order to create an airtight seal that will allow the tire to stay on the rim and the rider to slow to a safe stop in case of puncture. If the tire bead diameter is too large, it will not match the rim bead seat diameter. Likewise, if the bead material isn’t strong or stiff enough under high pressure loads, the tire bead will stretch over time and it will lose its original diameter.
If rim manufacturers do not work directly with tire manufacturers when designing new hookless rims, tolerances and bead materials can vary. This can make it difficult to pair tires and hookless rims from different manufacturers.