On my previous car a JCW Mini it had Dunlop run flats all round, I'd experienced the Pilot Sports on my BMW M235i and yes they are in my opinion the preferred fitting but when I needed to replace two tyres on the JCW (potholes) I stayed with the Dunlop run flats as I didn't want to mix tyres and to be honest when pushing hard they worked fine for me even though the JCW forum kept banging on about how good the Pilot Sports were just as on here.
Now my 310 VZ2 is fitted with Goodyear Eagle F1 tyres and I find absolutely no
problem with them and I've watched a YouTube video on them that shows they are indeed an excellent tyre but what if I had to change one or two? Well I'd stick with the Eagles, now what if I had the Bridgestone tyres fitted and I needed to change one? Well I think I'd stick with the Bridgestone tyres unless I felt I needed to change due to any safety concerns, obviously if three or more needed changing then I'd go for the Pilot Sports,