Punctured RFT: Which brand can be repaired?

[X5JDX]

So the alarm sounds and the warning is displayed - do not exceed 50mph. After much cursing I have to come to terms with the nail protruding from the middle of the the rear tyre and off to the dealer I slowly go.

I am reliable informed Bridgestone Dueller Sport RFT's cannot be repaired. My 315x35x20 tyre with less than 4000 miles is confined to the recyle bin. I then do a bit of searching around X5world and discover that had my car been fitted with Dunlops then the tyre could have been repaired. WTF!! I check the X5 parked next to mine on the dealers forecourt - Dunlops. I am p***ed off that I am now having to pay for a new tyre all because of pot luck regarding which brand of tyre my car was delivered with. If you are about to take delivery of a new X5 I would insist on RFT's that can be repaired.
I'm sure you would like to know which brand to ask for...

What I would like to ask for is some technical data on which RFT's can and cannot be repaired. I am not prepared to risk my family by driving a car with a repaired tyre that "should be OK" - hence my request for valid info. I need to be armed with some exact details before I continue my rant with BMW.

BTW: Thanks to BMW Customer Care for sorting me out with my dealers rental X5 as a loan car - but 7 days to get a new tyre is bloody ridiculous! The cost of lost rent is probably more than 4 new Dunlops!!!