e-power squeak at 50mph

[Badger]

Hi has anyone with a hybrid found they a squeak (sounds like metal rubbing) at 50 mph. I took the Nissan engineer for a ride. But he couldn’t hear it? The car needs to be warm and it has to be very close to 50mph. I don’t think it’s brakes. I think it’s either wheel bearings or a belt??

difficult as the engineer couldn’t hear it. But It’s definitely getting worse  

any ideas 💡 or advice would be appreciated 👍👍