I just finished my 25,000 mile service, had to replace steering head bearings and wheel bearing. Also found RR rotor warped , replaced it and brakes all around. I also add a new front tire. I now notice at 30mph I have a vibration that I can feel in the hand grips. I took the whole front end down again and rechecked all new parts and torque setting while going back together. Vibration is still there looking for ideas....