Home » Ignition Systems » After How Many Miles Should U Change Your Spark Plugs Iridium Plugs Last 100k Miles After How Many Miles Should U Change Your Spark Plugs Iridium Plugs Last 100k Miles I often get different answers as to how many miles your spark plugs are good for. I keep hearing that the iridium plugs last 100k miles but this seems a lil hard to believe, how true is that claim? Tags:Iridium Plugs, Spark Plugs Related Questions 1990 Olds Cutlass Supreme Has An Intermittent Problem At normal operating temperature the engine (3.1 Liter V-6) acts like it’s running on 5 cylinders. If it gets warmer than normal (not to the point of overheating) it How To Change Spark Plugs In 2001 Dodge Durango V8 4.7L 4×4 dodge durango 2001 how would i change the spark plugs? loks liek the wires connected to it and it leads a long tube or shaft down Answers for The Question David L 40,000 to 50,000 miles. Before you buy Iridium plugs ask for the 100,000 mile warranty. Busitnjustin41 It depends on the motor and im not sure about iridium plugs but Platinum plugs have been around for years….I have a 1999 suburban that came with Platinum plugs, GM recommends replacing them at 100k……..I have 151,000 on them….no misfires, but they probably dont look too pretty : ) Will The plugs will be fine the problem we find is a lot of the time the spark plug wont come out. I suggest to replace at 60k just for that reason, and have anti-seize on the threads and then dielectric grease to the spark plug boot to keep moisture and water out, also ads to boot removal next time. bill are they gaped properly thats all you need to know Incoming search terms: How Many Miles Before Changing Spark Plugs,How Many Miles For Spark Plugs,How Many Miles Do Spark Plugs Last,How Many Miles Are Spark Plugs Good For,How Many Miles Do You Drive Before You Change Spark Plugs In 2004 Chevy Colorado,How Many Miles Should A Set Of Standard Spark Plugs Last,How Many Miles Should You Change Spark Plugs,How Many Miles Till Spark Plug Change,How Many Miles Until Spark Plug Change,How Many Miles Until You Need To Change Your Spark Plugs?