Mine was just fixed - I was told by a software update.

Infrequently my D5 shows that the outside temp is at zero and warms me that I might expect icy roads. However this has been over high summer with true temp above 15 C. Anyone had this issue?

Same problem. I have a HSE LUX 3.0D. I'm told by the dealership its a known problem...

However I also feel that the AC is not blowing out enough air, unless I set it to max (which is borderline unberable).

Looking good as well! So they don't touch the inside of the wheel arch even though they are slightly wider and taller than factory ones?

Cool. What tires are you using?