Standard or Iridium Plugs????

[southrider]

I have a XR250R....which plug would you buy? Standard NGK or the NGK Iridium ???

 

[gwcrim]

If the engine is in good shape and the carb jetted right, standard plugs are usually all you need.

 

[Jaybird]

Use the cheapest plug you can. Take the time to gap them correctly and change it out a couple times a year and you will never have a spark plug problem.

 

[450X]

man you change your plugs a couple times a year? in my old XR250 i ran NGK and even a Splitfire and i can get 2 years easy out them no problem. and yes standard NGK is just fine.

 

[Jaybird]

Plug straps bouncing around in the combustion chamber can be loads of fun.
The weakest part of a plug is the strap, and with extended use the chance of the strap failing grows. Exponentially with a spitfire plug...but I won't go there....

OK, so time may not be the best judge. Take periodic looks at the strap, and when the sharp corners start to round off, it is time for a new plug.