WR9LS silver plug for the US cars which last 60-100K
Bosch copper plugs for the Euro cars and
NGK ZGR5A in the US cars which I have seen in use and have heard great comments about but have not tried yet. These are much less than the price of the silver plugs from bosch.

It is an older design and works well with the older plugs. I can't see throwing $11 and more toward a plug that may not work as well as the above mentioned ones that are known to work well.

Bimmerboard Project and Repair Links List for the E23
Bimmerboard Project and Repair Links List for the E28
Rick's No-Start Page

• Spark Plugs - elbiera 2008-01-31 08:49:50 (134 views)
  • Open mouth, insert sparkplug foot... - Vern 2008-02-03 02:27:13 (128 views)
    • Re: Open mouth, insert sparkplug foot... - elbiera 2008-02-04 13:54:20 (77 views)
      • I think any of the online distributors can get you a set of - Vern 2008-02-04 16:43:16 (70 views)
        • Re: I think any of the online distributors can get you a set of - Area52 2008-02-04 19:22:38 (64 views)
    • Good to see you back here Vern. Hope all is well with Josh's car and you are on - Draleu 2008-02-03 13:24:33 (66 views)
  • NGK ZGR5A - ///ARINUTS... 2008-02-02 14:00:52 (175 views)
  • What is this 'spark plug' that you speak of? (nt) - vance 2008-02-02 07:26:06 (80 views)
  • Bosch spark plugs - WR9LS vs. W8LCR - 2ck 2008-02-01 16:05:56 (170 views)
    • Re: Bosch spark plugs - WR9LS vs. W8LCR (url) - elbiera 2008-02-04 12:46:52 (133 views)
      • Do you there's there was any long-term damage to your car? (nt) - 2ck 2008-02-04 13:37:32 (55 views)
        • Re: Do you there's there was any long-term damage to your car? - elbiera 2008-02-04 13:47:52 (64 views)
  • Stay with stock, nothing more nothing less, otherwise you are wasting your time. (nt) - ejonesie22 2008-01-31 17:05:27 (75 views)
  • We as a group do not use other plugs except the - kff 2008-01-31 11:29:56 (126 views)
    • Every Forum Ive been on..LOVES to Debate this topic.... - wabiker 2008-01-31 20:59:27 (85 views)
      • Re: Every Forum Ive been on..LOVES to Debate this topic.... - elbiera 2008-02-04 13:49:50 (58 views)
      • So we are a different forum. no debate, just three saying go stock. (nt) - kff 2008-01-31 22:46:03 (71 views)
        • I guess it sounds like I was implying *this* Forum too... I wasnt . (nt) - wabiker 2008-01-31 23:32:34 (66 views)