When do you change the timing belt o a Volvo V70?

Depends on the year model. 99 and newer is 10 years or 105,000 miles. 98 models is at 70,000 or 5 years. Be sure to replace the tensioner roller and the idler roller. Nothing worse than an old one coming apart and the engine jumps time. You pull the cylinder head then to replace bent valves.