Timing Belt Service D2 S8

[B4-Andy]

Hello, looking for advice on this, I'm no 100% sure if I'm being overly paranoid or not!

Timing belt on my D2 S8 was last done 40k, 5 1/2 years ago. I have it in my head that it needs done again, but... A quick gander at the service book reckons it's an 80k interval between timing belt changes.... Which means I have many, many miles before it needs done. It's the age of the belt that I'm worried about but the service book doesn't seem concerned with age!

What say ye people of the forum?!