I've seen these that look like good.
http://www.ebay.co.uk/itm/ERROR-FREE-CANBUS-W5W-T10-501-LED-SIDE-LIGHT-BULB-6-SMD-BMW-VW-AUDI-S3-X5-E60-/251063526011?_trksid=m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D3%26po%3DLVI%26ps%3D63%26clkid%3D8737988586631351238
I've fitted LED's in the past and they've started flashing within a week. I tried 4 different types in my last car that all started flashing on the same side so I thought the car was at fault but to hear you've had flashing it must be an LED thing?
http://www.ebay.co.uk/itm/ERROR-FREE-CANBUS-W5W-T10-501-LED-SIDE-LIGHT-BULB-6-SMD-BMW-VW-AUDI-S3-X5-E60-/251063526011?_trksid=m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D3%26po%3DLVI%26ps%3D63%26clkid%3D8737988586631351238
I've fitted LED's in the past and they've started flashing within a week. I tried 4 different types in my last car that all started flashing on the same side so I thought the car was at fault but to hear you've had flashing it must be an LED thing?