Had a terrible noise coming from the right rear of my winter car. Turns out it was the hub bearing. On about 60% of cars these are assemblies that bolt in, and on the remaining 40% they are a press in type bearing that requires a lot of work to replace.
Thankfully these are the bolt in type, and even with many years of rust built op on the assembly, I was able to replace it without much trouble.
Expect to pay between $350 to $500 to pay someone to install this on your Volvo. I paid $55.00 with free shipping from Ebay and it took less than an hour.