2021 focus st-3 missing tpms

[russellw]

The ST3 certainly had them in other markets and there are kits readily available (~$90) to retro fit them where they are not fitted so the BCM is obviously capable. I can't definitively say whether they did have them for all models but the on-line owners manual says they were certainly fitted to some models so perhaps check your book.
TPMS aren't going to be much use for a blowout unless it was caused by a slow leak rather than catastrophic damage.