My S60 t5 is extremely solid, with no rattles. There is a tiny "itch" type noise coming from around the "B" pillar. I have done some looking around, and have yet to find the source. Any recommendations would be welcome. That being said, there was another sound, which I have eliminated. Going over medium but "sharp" bumps, there was a "thump-thump" sound coming from the trunk area. If you look in the trunk, under the carpeted floor, you will find the kit for the tire inflation stuff. This kit is mounted in a formed foam type holder. The holder bounced against both the metal floor beneath it and the carpeted floor underside above it. If you have this noise, you might try putting a thin towel under the tire inflator holder assembly, and something similiar above the assembly and see if that takes care of the noise. I ended up cementing some thin felt padding under the tire inflator holder assembly, and then put the same felt on all the little "bumpers" that are under the carpeted floor underside. No more "thump-thump going over bumps. Very solid.