Side comment re. RS's. A lot of review, etc. of these tyres mention the wear rate as being high.

The 530 had these tyres on when I bought it, fronts weren't new but didn't have a huge amount of wear and the rears could have been, maybe, half worn. I added 10k to the rears before I replaced them. I'd guess they'd covered 18-20k in total.

I can't even remember what I changed them for, Goodyear possibly. They gripped well but were shot within 15k miles.

The front RS's were replaced after I'd added 24k miles, plus whatever from before me. Full set of RS's added again and 12k miles in I doubt that either front or rear is more than half worn at this stage. Nothing shabby about that.