I have 2 questions 1 is about when I brake and the other is when I'm going 60+ I have a humming noise

So I'm not car dumb I no how to fix everything on them I just cant find any info on my car so my questions are first when I brake my steering wheel will shake its only from 55 to about 35 and then it is almost gone it goes away the slower I get I'm pretty sure it's because my rotors arnt parallel I was wondering if you think that could be the problem? And if it is do you know the discard thickness and the beginning thickness of the front and back rotors? The other thing I'm kinda confused on when I go 60+ their is a humming noise from the front end and when I turn to the right it gets really loud but if I turn left it goes away completely I'm thinking it's a bearing but not sure. And I was wondering if both of these are just a bigger problem that I don't know about?

Thank you for the help