750il squeal

[Beamer619]

Ever since i repaired the rear shock ive been hearing a squeal seems to be only while the car is moving and it will stop and start randomly and whenever i start it, it seems to squeal for about 10 seconds down the road and then its random from there on out for the rest of the ride. Any ideas of whats cause the car to squeal and no i don't notice it squeal when i turn the steering wheel, brake or accelerate its just completely random to my knowledge.

[shogun]

Noise from where? Front sus/steering, rear, under car?