Right front crunching sound in Volvo S60

I have a 2004 Volvo S60 2.5T with around 111K miles on it. The front right makes a loud crunching sound when I turn the wheels right or left while braking, and it is worse when it is hot outside or on a long trip. I have taken into the local Volvo dealership 4 times for the same problem. I have had the strut bearing replaced, an alignment done, then all new tires put on plus an alignment, and finally the entire right front strut assembly replaced. I’m not sure if it’s related, but the tires had to be replaced after only 20K miles, and they were more worn on the right tires than the left tires, but the wear was even. After the strut assembly was replaced this past Thursday, it rode like a dream for 2 days, but now it is back to crunching again. Does anyone have suggestions?