We thought Alcantara was very sweaty and smelt strange. Never had problems with other car seats (and we wash!) by the way. Never really looked that great either. We decided not to spent the extra £475 for something we had a less than good experience with.
The Bridgestones are OK I suppose.. but I reckon they are noiser than the Michelins we had on 2008 8P Quattrp TDi 170 and if reports are true are unlikely to last as long.
Not a bad tyre but not a great one either although 60 miles is hardly a fair test!!