Well I just mounted and balanced my set of Avon Tech M550. The ride seems very bumpy. What gives?

 

Installer overinflated the tires?

I'm not familiar with those tires but it could be that they have a stiffer sidewall than your previous tires. That would make the ride harder. Also, harder rubber compounds will change the ride.

 

could have correct air pressure now...

stiffer side walls...

 

Do you guys think a bent rim could be the cukprite? Because I was driving on the interstate and I noticed the steering wheel vibrating alot.

 

Some tires are more comfortable than others.

 

You probably need the alignment checked as well.