Are you gapping worn plugs or wanting to gap new ones?Does anyone know the correct spark plug gap for a S5 2011 3.0 ltr V6 please ?
If worn I'd replace your worn ones with a set of NGK laser platniums. No gapping needed
Also might pay to check things coil packs as well depending on kms.
I don't think I've ever gapped plugs in any of my cars, stock or boosted and tuned, just chuck in the reccomended plugs and drive for 60,000kms or 6 years.... Whatever comes first.