Had my first flat tire yesterday. Ran over a long bolt. We decided not to use the tire fix that comes with the Smart. Instead, bought a tire plug kit, then got a compressor to pump up the tire. This worked perfectly. We then took it to Discount Tires (in Harlingen, TX) where they tried to use the wrong size socket to take off the tire. Long story short, they agreed to replace the three lug bolts damaged, and not charge us for the fix.
We made up our own emergency kit: a $30 compressor (from Pep Boys), new, unopened tire plug kit, and the two tools with it, a 15 mm socket, and a good flash light. This fits nicely in the storage compartment in the tailgate.
By the way, we have TWO SMARTS. We live in NY in the summer (have a yellow and black) and Texas in the winter (a 2009 blue/silver). Do we love SMARTS????? We sure do!!!!!!!!!!!!!!!!