question about iridum spark plug post

[bonestock240sx]

read on one of the forums here about 2 weeks ago... about iridium spark plugs only being good for testing and to get rid of them after testing. i dont remember who posted it or what forum it was under.... but im kinda confused....

[Shabbernigdo]

i dont know what your were reading but iridium plugs are good for the same duration if not longer then standard plugs.

[seang]

My Mom's 2000 Grand Prix GT came stock with Denso Iridium's. The car has 110,000 miles, and they are still origional. We are only now gearing up to replace them, (the rear ones look like a pain in the a**). Car runs like a raped date. The only reason we want to change them is that we are at the limits of our knowledge as to how long they will actually last, or if they will last longer, will they just be less efficient than new, IDK. After this many miles, might as well replace them. After we do change them, I'm gonna read them just out of curiosity. I have heard of platinums plugs lasting 100k in other engines, and thats not even Iridium.
Modified by seang at 10:59 PM 9/14/2009

[seang]

Another reasoning, if someone is building thier engine up, they might not want to spend on Iridiums right away because they should be reading thier plugs as they go along to make sure they are in the correct heat range. Iriduim's are too expensive to be test mules.

[bonestock240sx]

yeah i know that they are fantastic spark plugs and thats why i was confused.... but maybe i read it wrong and they were saying dont use iridiums to test cus they are to expensive.... but im pretty sure it said something about them being horrible to use after testing... o well no big deal really cus i use them and im fine... but i got an engine in the works so i figure i might ask... thanks guys