I keep two spare tires in my garage, a hockey puck in my trunk and a AAA membership as a backup in case Tesla roadside assistance falls apart. A number of people have posted that even after they got through Tesla informed them they did not have any spare tires available which pretty much defeats the purpose of having roadside assistance.
In the few times I've been in a car that needed roadside assistance (never a Tesla!), it's usually been a saga of waiting, sometimes a couple of hours.... Has been quicker for me to do the work myself, but that's on a regular vehicle, with spare accessible. Do any Tesla's come with spares? Realizing that I don't even know if my S70 has one now....