i could've sworn the track handling package comes with runflats...because i have the tracking handling package (give away are the added blue m calipers f/r) and mine came with runflats, when purchased new.
either way, i have a can of griot's sealer and the accompanying inflator. I've never had to use it before, but it's there in the back trunk compartment underneath the floor.
https://www.griotsgarage.com/product...pair+system.do