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Depends. What do you want? TR55's last about 30K miles. Irradium's last at least 60K. I went with the TR55's because I don't mind changing them and they were a lot less expensive.
just wondering should I run ngk spark plus in my 1998 vette ..? what do you think..?
The NGK's will work just fine,but some of the other manufactures products will provide a longer plug life. However,if you ever go boosted or nitrous then NGK's are a must. They provide an additional safety margin when things go south...better a melted strap than a blown piston.
Last edited by 98vettedave; Oct 14, 2010 at 02:38 PM.
Reason: wrong word
Depends. What do you want? TR55's last about 30K miles. Irradium's last at least 60K. I went with the TR55's because I don't mind changing them and they were a lot less expensive.
yes they are less than half the price but i have heard that the iridiums last up to 100k miles...also said guaranteed for 100k miles on my box of iridiums
yes they are less than half the price but i have heard that the iridiums last up to 100k miles...also said guaranteed for 100k miles on my box of iridiums
My thing is, even though the iridiums can go 100k, I cant ever see myself going 25k without pulling them to check anyway. So I might as well throw in a fresh set while I'm in there. If you have any engine mods done they may NEED replaced more often due to rich/lean spots in your tune. In that case putting the more expensive plugs in would be even less viable.
My thing is, even though the iridiums can go 100k, I cant ever see myself going 25k without pulling them to check anyway. So I might as well throw in a fresh set while I'm in there. If you have any engine mods done they may NEED replaced more often due to rich/lean spots in your tune. In that case putting the more expensive plugs in would be even less viable.
i know but one can have the security mindset (i do atleast) knowing that the iridiums can go the distance where as the NGK's is a MUST change. And like you said, with mods, youd be changing even SOONER with the NGK's....just going off what you said.