Iridium Plugs,not worth the money!

[bozboz]

The benefit of iridium is because the electrode is smaller you get a stronger more reliable spark than on a standard plug and they last longer.

Well a spark is a spark, Ive certainly never had an 'unreliable' spark caused by a plug after 200k in the last 4years using normal NGKs. In terms of them lasting longer, Ive never had a spark of normal type fail on me. Ever. Before I was despatching/saving my pennies I had IRs fitted to my cbr600 but that had everything done to it (full ex system, power commder, etc...) so I can't say they did much.

I remember one comparision an old mechanic told me - you can spend 10 minutes trying to scoop out every last drop of your soup from your bowl - but is it really worth it ?

I didn't buy them because they increase the bhp - they probably don't, or you won't notice it.
I bought them because they seem to be a bit more reliable and never had a problem with them. Plus I feel good about getting the best possible stuff for the bike.

Something to consider for those of us who are looking to get the most power/performance out of our road bikes: A smaller electrode means less material in the combustion chamber which means a very VERY mild drop in compression (in turn a less complete burn and hence less power-maybe). Seems silly but Ive heard of  many R6 club racers use the CR9EK plugs which have 2 electrodes(EK) and sit 1mm deeper into the chanber. No advantage to two electrodes (you can only get one spark at a time) but that bit of extra meat increases compression (oh so slightly) and therefore horsepower.