I just installed an anti-glare screen protector I learned about in the E39 bimmerfest forum (E39 and E53 dynavin have the same screen). Works great and what a difference! I think it's a must have.

Anti-Glare film - Dyanavin N6 e39 Touch Screen - Bimmerfest - BMW Forums=

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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.