Last summer, I changed mt T/B at 88K miles. Belt, roller, tensioner and waterpump were in great condition.
Of course anything can go wrong but I would guess that if the mile number is correct and there are no strange sounds from the front of the engine, you will be fine.
From what I have heard, when folks ignore the T/B change interval, they usually don't have a failure until well past the change interval. (100K + miles) I would bet the Volvo that YMZ mentioned was well past.....................