The first time I used a mobile tyre fitter, I didn't really know what I was signing up for. I'd had a slow puncture developing for a few days on my Vauxhall Astra, kept meaning to get to a garage, and then one Thursday morning it was completely flat on the driveway. No chance of driving it anywhere. A neighbour suggested calling a mobile tyre fitter instead. Within the hour, a van pulled up, a...