trombone

I have 88K miles on my 2002 S430 and probably the spark plugs have never been changed yet. Dealership service suggests the change.

There is absoluteley no indication of any ignition porblem, the car runs and accelerates with perfect performance.

I'm a bit hesitant to 'fix' something which works OK, but just in case I already have the 16 Bosch Platinums.

If I change the plugs, is it necessary/advisable/ignorable to change the plug wires as well? What is the best routine to follow?

A technical question: what is the required Nm torque to tighten the new plugs?

Thanks for your considerations

tusabes

I agree with you DONT change them if you dont notice anything wrong. There have been lots of problems reported in this forum when someone decided to change them "just because it seems like it was time"

Dont open a can of worms if its sealed nice and tight