My cx5 has very loud cabinnoise from the tires. Is there someting I can do about?

 

New tires which run quieter are about the only solution. The 2017 CX-5 has much improved noise reduction design to keep the cabin noticeably quieter.

 

How many miles on your car, what year and are they the original tires? Do you know what the tread depth readings are? These are all important factors.

 

New tires.

 

That's the simple answer. Now consider if OP had been something like this:
"My cx5 has very loud cabinnoise from the tires. Is there someting I can do about? BTW, it's a 2016.5 AWD Touring model with only 1500 miles on it!"
Now you see why I asked for additional info?

 

I'll still go back to "new tires". I've already had one new Mazda where I had to replace the tires a whopping 400 miles after I drove it off the show room floor. Why? Mazda has often been accused of using crap rubber on their new cars; mine was no exception.

The only good news here is the tires they put on our new Mazda3 are actually pretty good.

 

I haven't been on a forum yet in which people didn't complain about OE tires. It's what you do when you have no other explanation for a problem. I take those comments with a grain of salt.

 

Well, in the case of my Mazda, the new tires quieted the car right down; I drove that set for over 40,000 miles and then the follow on set, which stayed quiet for some 30,000 plus miles before I traded the car in.

Do new tires work every time? No, probably not. The thing is, Mazda has a pretty bad reputation in this regard.