its time to change them. just wanted to know what you guys were having the best luck with. thanks

 

I recently swapped my OEM Lexus ones that were done at the 60k service for the NGK IX Iridium. I believe they are close, if not better, than the OEM one's. Iridium last's longer than platinum and NGK is a reputable company.

 

Stick with factory iridium plugs... Denso or NGK and you'll be fine.

 

I believe the OEM plugs are actually the NGK Laser Iridiums... If this is the case, then the IX's are actually a step down...

a quick google suggests that my memory is correct and the OEM NGK part number is IFR6T-11, which indicates the laser cut iridium NGK plug... ngk.com (just a e-tailer for NGK spark plugs, not NGK direct) has them cheaper than most other places I've ever found: http://ngk.com/results_app.asp?AAIA=1373846

 

I always wondered which one would give better performance? NGK or Denso?

 

zero difference...

 

awesome thanks guys

 

just fyi guys advance auto parts has NGK Laser Iridiums for 6.99 each

 

Amazon has 8 for $57