The rear tyre on my bike developed a flat while parked outside my house. On inspection it turned out to be because there was a large split in the tube at the base of the valve. The tubes and tyres are Specialized, the tyre being a Nimbus armadillo - seems pointless developing a p******* proof tyre if the tubes just disintegrate. As I had the wheel off I took the opportunity to carry out some other maintenance and changed the brake pads, then re-assembled everything and and gave it a quick test. All seemed satisfactory but when putting the bike away I spotted a large hole in the tread. One very brief skid (the new pads had made the brake considerably tighter than before) had ripped a 50p piece sized section of tread off the tyre. So it was off with the tyre again - closer inspection showed that the rubber tread is coming away from the carcass of the tyre at several other places too. The tyre had done 3600 miles and if it hadn't fallen apart should have lasted a lot longer- there was still plenty of tread pattern on it. Are all Specialized tubes and tyres this poorly made or was I just unlucky? BTW I replaced it with a Conti Ultra Gatorskin - £19.99 at Halfrauds but came up as £11.99 at the till!