Hi, I have had a 530d M Sport Touring for the last month or so. 52k miles. Have need new wheel (£400 as it had a crack in rim) and Tyre (£180, nail) to get through MOT. Otherwise ok. Also had to have body repairs to wing, door and mirror where some kind soul swiped it when parked outside house overnight. Not the best start! Also car has some DPF history. Manchester BMW tried to regen and failed after many £'s.....an independent in Sale sorted it in an hour. Any ideas on keeping it from recurring, apart from the obvious driving at steady speed for a given time? Additives? Best quality fuel? Thermostats change?