My Signia Pure Charge & Go do a wonderful job of killing wind noise in the car & truck (windows always down for me- winter & summer). It works outdoors, too.
What the audiologist set up for me:
For hearing the radio, I tap a button on one of the devices to aim the aids straight ahead. It still picks up some from sides, but straight ahead is the primary sound.
I can also tap again to enhance the sound for better clarity, but it’s kind of synthetic sounding. There is another tap to ignore all sound from rear, but leave front and side normal sounding.
For hearing passengers in the rear seats, I can use the phone app to aim straight back- or partly back and partly right to also hear a front seat person- or anywhere in between.
Only front seat passenger? They can be aimed to right only (or I can turn off the left one which is easier than messing with the app).
Perhaps your devices have such helpful features. Ask the person who programs them for you.
Hoping For Success For You!
Paul