Timing belt master thread/sticky?

Next month I'll be due for my second timing belt replacement - I replaced it last in June '16 at 168k, currently at 180k (yes, 12k miles in 9 years). I'm pondering two things:
- Radiator was replaced with Denso at last timing belt change. Should I replace it again? It still looks like new.
- If the cam and crank seals aren't leaking, replace them or leave them alone?

 

If it were me, I'd probably roll a full 10yrs on the belt, but I'd inspect it for sure.

If you're in there, I'd do the cam and crank seals.

I wouldn't replace the radiator, 12k miles on a radiator to replace it seems silly.

 

I'm gonna hit 9 years next April but I'm nowhere close to 90k miles. I'm considering pushing the belt to 10 years. I looked at it when I replaced my alternator and it still looked good.

 

I still have the belt I replaced 9 years ago and even that looks good still, though sitting in a drawer isn't terribly demanding of it.

Replacing per schedule it gives me peace of mind when I'm sitting at 4k rpms pulling the camper up a long hill

 

My general rule of thumb on every vehicle I've owned prior with timing belt is 100k miles.

I get that Toyota says 9yr/90k, but I don't feel like 10yr/100k miles is pushing it if you use OEM parts, and are replacing the tensioner and pulleys Aisin includes in their kit, along with the water pump and t-stat.

 

Definitely, as long as you know for sure when the belt was last done and inspect it at the 9yr/90k mark.
That said, in the long run it doesn't really save any money or work to do it at 9/90 vs 10/100.