Old thread but reasons pro and con on the Fairbourne screen.

It blocks the wind blast very well but on real hot days, like 90F, sticking your head around it is a help.

Here is the only downside I have not heard mentioned, the tonneau cover does not fit well with it. MMC did not design the tonneau for the screen support.
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The light at the end of the tunnel is actually a train. 2019 M3W