Soundproofing the wheel wells?

[ACoupe]

New member here. Quick intro, I drive a 2007 G35 Coupe, and am looking at my next ride.
I've been browsing this forum for a little while and last night my dealership got a yellow Z in, and I took it out for a spin.

Wow. I really like this car. Now granted it was only a short test drive as they had just received the car in and hadn't set it up in the system, and it was LOW on gas, so I couldn't test it's power or handling, but my initial impression is still one of strong like, approaching love. I really need to take a proper test drive before I plan it as a purchase.

I'd read about the rear wheel-well noise and did experience it last night, and am wondering if you could use a spray rubber of sorts (like they use in flat beds?) as a sound-dampening for the rear wells?

I was also surprised at the blind spots, they didn't really bother me all that much, nor the rear visibility (coming from a G I was used to small rear window and blind-ish spots).