When to change spark plugs

With the relatively easy access to spark plugs in a Taco, I could change them in an hour. Change at 60k with not a second thought in mind. But changing them in an Avalon/Camry with a 2GR-FE. I'd use the expensive 120k spark plugs. I don't like doing those.

 

I just changed mine (2017) at 61k for the same reasons others stated, to be ahead of services.
They were all tight and looked good and probably could have left them in there. It does seem to run a little smoother.

 

Not a placebo, I was getting a slight roughness before doing it....4realzbro

 

I’ve owned my ‘19 since new, I just rolled over 82k and the truck has been great. I ordered factory plugs and plan on doing them within the next week or so.

 

60k

DIY

 

Ok fine, it’s nice out tonight so I’ll just do them now.

 

It does seem to idle smoother but I’ll know more tomorrow. Plugs didn’t look horrible but definitely looked like they had 82k on them.