Spark Plugs for Supercharged Tacoma

Hey tw, I have an 09 Tacoma Supercharged with 71k miles. I was just wondering, when do I gotta change the spark plugs and battery?

Thanks!

 

Battery is whenever it starts to show issues or if you're anal, every three years.

Plugs, I believe since we have iridiums with the Supercharger we can go 60k miles, although NGK says you can go 120k with their Iridiums, I don't like the idea of plugs seizing in the heads. Someone correct me if I'm wrong.

I know with the stock, copper plugs you need to replace them every 30k.

 

Ill be doing mine every 30K as cheap insurance for the engine, and heads.
Ymmv

 

I have iridium's in one of my Toyotas and I went 105,000 because I was told they were good until 120,000. I would not recommend it to anyone. In the future I will change them at 50,000 mile intervals. The gap on the first set after removing them had opened to almost twice what was recommended.