Spark Plugs - Recommendations
What are people's recommendation with regard to the make of plugs and recommended suppliers. Bosch were recommended by Conan in another thread but the Super 4s were dismissed in one forum for causing misfires. Others trashed Iridiums (but no manufacturer was mentioned). As the price for a set can vary between £24 and £84 I am keen to make the right choice at the right price. 
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2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
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