What is the advantage of Iridium spark plugs?

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asked Sep 12, 2019 in Repairs/Maintenance by vdeal (300 points)
What is the advantage of Iridium spark plugs?

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answered Sep 12, 2019 by MrMoonPie (10,690 points)
Iridium spark plugs do have a few advantages or standard spark plugs and for some people the Iridium spark plugs are worth the extra cost over the cheaper spark plugs.

The main advantages of Iridium spark plugs over regular spark plugs is that Iridium spark plugs have better performance and more complete combustion than platinum-tipped spark plugs.

The iridium spark plugs tend to last a bit longer than regular spark plugs as well which means you don't have to change Iridium spark plugs as often as regular spark plugs.

That would be an advantage in vehicles that have the spark plugs buried way under or way back in the engine bay.

I've seen a few vehicles such as a mini van that had to have the engine sub frame dropped just to change spark plugs in the back.

So in that case installing Iridium spark plugs would be worth the extra cost so that they last longer.

But for people like me that don't need the extra performance or longevity of the spark plugs the regular spark plugs work just fine for me.

I personally just use the regular Autolite spark plugs which have worked well for my dad for years and for me for years as well.

I change out my spark plugs every 80,000 to 100,000 miles and never had a problem with performance issues.

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