Not for the 740, but I have run them on a 91 318is and my 98 M roadster with great success in both cases. No complaints, great handling and super tread life. I will buy them again. Check them out at the Tire Rack or Discount Tire.
I bought a set KUMHO ECSTA asx all season for my 01 BMW 740i SPORT two years ago and after 30k miles rear tires are still pretty good (I replaced front ones for CONTINENTAL after uneven were due to wrong balancing).
I would buy them again if I had to.