good suggestions, I know it's likely not tire related as I had this issue when I first got the VX, then I replaced all 4 tires in the hopes of quieting the noise (which, once again I thought was tire roar) and still had the noise, I've also rotated the tires since I replaced them
Just a reminder, I only get it on throttle and it goes away when I lift off the throttle, also, it only happens at highway speeds