I just replaced the rotors and pads with a kit from R1 Concepts. The brkes seem to be bedding in fine but i am feeling a slight shutter on the drivers side, under acceleration, in between 10 and 20 mph. The truck is a two wheel drive so i had to swap the bearings from the stock rotors over to the new ones. What is the correct process in reassembly for the front hubs? They spin freely when the wheel was off. The truck only has 42K miles so i didnt repack the bearings before i reinstalled them, however i did pack grease into the new rotor/hub area. Any ideas?

 

You may have a caliper sticking. Take the wheel off and check it out buy having someone hold the brake then let off and you spin the rotor buy hand.

 

I would also go back and re-torque everything to spec. Especially the lug nuts in cross pattern sequence...