Hi everyone. A simple question I hope ? I only ever use NGK plugs and have BPR6ES currently fitted in my highly modified Plus8 engine. Is it worth paying 4 times as much for the equivalent NGK BPR6EIX Iridium plug ? I know they last longer, but since it's only £24 for a set of the standard plugs, I'm happy to frequently change them.
Stay safe, John.

1999 Plus8