I have a 2004 s60 2.5T with about 45k miles on it. Not very car savvy,
so I would greatly appreciate you guys help.

Recently, I notice a "thud" sound coming from the back passenger "tire
area" when driving over even the slightest bump in the road surface. I
only hear the noise when there are people sitting in the back seat
(because of the additional weight I presume). Someone suggested this
could be a problem with the rear strut.

Any ideas or confirmations?

Thanks in advance.