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  1. E39 (1997 - 2003)
    Why would Bosch spark plugs be prone to loosening & backing out & needing timeserts? Why would Bosch spark plugs (reputedly) seem to be loosening up (causing them to eventually blow out of the engine, taking the threads with them) purportedly more so than NGK or BMW OEM spark plugs? A thread...
  2. E46 (1999 - 2006)
    my 2001 bmw 330ci blew out a spark plug and the threads on the cylinder head are destroyed. I was looking at the timesert spark plug inserts kit and they seem to be a solution to my problem, however i would appreciate if anyone has had experience using this spark plug thread repair kit and if...
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