Hi so i had taken my RR into a local garage for a simple oil change and to have rear pads changed thought this would be an easy job.
After taken my car back and for a drive after about 5 mins i could feel a slight vibration noise it sounded like the suspension was trying to level it self out whilst i was driving. I have never herd this before ........................ Since sat when driving the noise comes and go's when it starts vibrating it lasts for about 30/40 seconds it seems a bit annoying but has been doing this for the last 2 days now . It has only done it about id say 7 to 8 times over about 4 hours of driving . Is this anything to worry about or does this sound like I'm heading for problems.The vibrating sound is the same noise when i set the suppression level to High ...... Please help me if you can. Before my oil change and new rear pads i had never herd this vibrating noise . And even when i first started the car from cold i got the same stupid vibrating noise for about about 50 seconds then stopped . I did go back to my garage but the think its me being an annoying customer and is hard to show them the problem as its ever now and then . Any help would be useful and thanks in advance for any help .

They might have gotten the EPB (parking brake) out of adjustment when changing the brakes somehow. It operates on the rear rotors, and when it's out of adjustment, it can overheat and cause a vibration intermittently. You should notice a burning smell and/or brake dust on the affected rear wheel. Worth a check.