Im up to 27,200 on my rear 20's..i think i have another 3k left in them
 

how many miles did you get out of your rear dunlop 20"s?

22K all around. My rears looked like a ocean wave on the inside. Switched to the Bridgestone after them, got 38K out of them.

Do either of you rotate your tires?

didnt rotate since i had the other rear replaced due to nail
 

in tire plus i dont think your supoose to rotate on X

We're at 25,000 with probably about another 1k or 2k left. The Conti ExtrContact DWSs are sitting in the garage, waiting.

I just put those on! you're going to be amazed how much better the X is on those.:thumbup:

UPDATE AT 28,800..TOOK THE X TO THE DEALER AND ASKED TO CHECK TIRE..THEY TOLD ME IT HAD 4/32 ...NOT BAD I THOUGHT.. MAYBE THE TIRE WILL MAKE IT UNTIL 32-35K??? WHAT ABOUT U?

I have done 41,000 on the original Michellan run flats. BMW Service reckon I have at least another 20k left in them.

Mozzy you have 18" rims, the tires will last a lot longer. The OP was asking about 20"ers... they will wear much quicker.

None the less, good wear on those RFT's at any size.

I had about 23K on mine and the fronts were done but the back looked ok so I bought two used ones for the front for under $100.00 with 4/32 left on them. When they are done, the backs should be done too and I'll replace all four. I couldn't see replacing all four when the backs still had plenty of tread left. Those Dunlops are well over $400.00 each. I'll most likely go with the Michelin's when the time comes.