Originally Posted by shrink
You're ridiculously over simplifying this. I'm suggesting there need be very little difference in terms of grip and braking performance etc between the two types. Ride quality is a very different matter, and that's precisely why many including myself intend to ditch the run flats. There's also noise and potentially poor cold weather performance on rft
OK and they are perfectly good reasons to ditch the RFT.
The point I am making (and I'm afraid I'm a simple person) is that it is nonsense to say there is no issue mixing them front-rear but it's madness to mix them left-right.
I strongly suspect some people are confusing 250bhp BMWs with run-flat tyres and drum-braked Ford Anglias with radials and cross-plys.