Hi everyone,

I need to replace the spark plugs on my daily car and was thinking about iridium ones. They're considerably more expensive than copper or platinum, but I've heard they last longer and perform better.

For those who've already made the switch, have you noticed any real difference in performance, fuel economy, or smoothness? Or is the longer lifespan the main advantage?

I'd love to hear your thoughts before I buy a set. Thanks!

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