I f a bag bursts on you iam told youre screwed, if you happened to have spare one in back would you take on fiting it at side of road, or call the AA

If you have the correct tools this is no problem as you have to be prepared for most eventualities. I carry a spare bag and hydraulic jack and toolbox anyway but best to check what you need if you dont have AA cover it can save you alot of money and it is easy to change.

Good luck