I'm glad I ticked the option for a space saver spare wheel - the can of goo inflation kit is no solution! So leaving the office this morning when the tyre monitor graphic told me I had a flat I thought "that's OK, I'm equipped!"
But what a pain it is to actually use. For those of you without one let me elaborate. Empty the boot and pull back the floor. Remove the tool kit from the well - it's a very snug fit so give it a wiggle. Remove wheel brace from kit. Unscrew the metal nut from the bolt in the floor. Remove the metal panel beneath. Screw the long end of the brace onto the bolt and tighten. Use the spanner sculpted end of the panel you just removed to twist the nut beneath the bolt. This holds the spare wheel tray so has a fair bit of weight behind it. Spanner tool thing not an exact fit, a bugger to turn. Tray then unceremoniously drops to the floor under the car.
Then change the wheel for the space saver - the easy bit. User manual then helpfully tells you to "stow the wheel and tray inside the car". Except that the wheel and the tray won't both fit in the boot. So the tray - which is wet and muddy - needs to go in the back. What do you do if carrying luggage or passengers.
Then manual also helpfully advises that my local mini service centre will refit the space saver and the tray - I hope my local tyre shack can do it as the tyre is repairable.