When to change timing belt 1999 altima?

For a 1999 Nissan Altima, it's generally recommended to change the timing belt every 60,000 to 100,000 miles, depending on driving conditions and maintenance history. It's essential to consult the owner's manual for specific guidelines, as well as to consider factors like age and any signs of wear. If you're experiencing unusual noises or performance issues, it's wise to have it inspected sooner. Regular maintenance can help prevent potential engine damage.