I drove my truck to work today (had to go to Ma & Pa's house to collect the fire tank and pump afterwards) and had a fairly abrupt puncture at about half way. Once I'd replaced it with the spare I noticed that it had a 25mm wide slit through the sidewall, but whatever made the hole was nowhere to be seen. Seeing as how I needed a replacement right away, the tyre shop charged me 0 for a Pirelli light truck tyre. That's such a pretty little thing compared to the four Chinese tyres that are currently on the truck that I can't bear to actually use it, so I'm going to make it the new spare. BTH