OEM vs NGK Iridium Spark Plugs

[Oxxa]

My bike just hit 20k km and it is time to change the spark plugs.

 

Do I go with OEM or NGK Iridium?
 

If NGK Iridium can last more than 20k km, i might choose Iridium.

 

But, isn’t it good to switch whatever spark plug every 20k anyway?

Edited March 23, 2023 by Oxxa
Typo

[Wintersdark]

Some do and you can, but it will make absolutely no difference.  Personally, I swap things out when the manual says to swap them out, so if I put Iridium plugs in I'd still swap them at the same mileage amount anyways.  I'd be uncomfortable leaving them longer because while ostensibly they last longer, I don't know exactly how much longer, and frankly spark plugs are cheap. 

 

Honestly, I'd just put in regular OEM plugs.  Yamaha specced those for a reason, and they work well.  We like to think we're "going the extra mile" getting the expensive versions for replacements, but it's not going to make the bike run any different.

[BikeBrother]

From a test in a dutch motormagazine where they compared oem vs iridium sparkplug, the testers found out that the motorbike with iridium sparkplugs run a bit smoother and had some better fuel consumption. Depends how longer you can use the iridium sparkplugs, it can pay off. I will change to iridium with my next service, just to try.