Review on Premium Performance Upgrade: 6 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 4469 by Adrian Retana

When I found mine I thought it was a really good price. When I get them I install them, they claim it's a pretty big .044 gap. After installing them I noticed my car was acting strangely so I took the spark plugs back out and checked them with a spark plug tool , whenever I measured it. was 0.034. And my car worked for about 5 minutes and the candles have already burned out. I'm very frustrated with this, I've heard they're supposed to be amazing spark plugs but as far as I can see they don't really live up to their word. Always check the gap size before installation or you may end up in my boat.