We had the OEM Dunlop Sport Crap runflats on our 2007 4.8i and the drivers side rear developed either a flat spot or a shifted band or something because it developed a sound that sounded like it was saying wop, wop, wop every time that it made a revolution. It didn't matter if it was slow speed, high speed either. It just did it all of the time. Talk about a tire that wears QUICKLY!
I got tired of hearing it and started researching new tires and finally decided on some Continental Extreme DWS's. I was ready to order them and found out that the fronts are on national back order. I called around to a few places and the last call that I made was to Discount Tire and upon talking to Mike there, he said that he'd call a few places and see what he could do (this was on WEdnesday).
Low and behold, an hour later, he called me back saying that he found a pair in Alabama and they'd be here on Monday.....Fast forward to today, when at @2:19 pm, I got a call telling me that they all came in. Needless to say, that I was gone to the shop to get some new kicks!
Now, onto the review. These tires are AWESOME! Less road noise, lighter than the runflats (feels llike it's a little peppier because of less unsprung weight. Maybe it's my imagination, but I don't care because it feels peppier

). The downside is there is no spare, but everything has a tradeoff.
He told me that he thinks that I got the last pair in the USA. I often say that timing is everythinng and in this case it was true! I'm just glad that it worked out in my favor today!
Sorry to ramble, but I'm pretty excited to have our X5 running/sounding like it should!
Please have a Great Night!