Mixing Tyre Types

Hi, shame I've only just seen the posting regarding the potential of winning tickets for Wales Rally GB!

Anyway, my question is this - I've got a 57-plate 135i M Sport, which I've had for about 8 months now,. When I got it, it had Bridgestone run-flats all round. The rears are now distinctly due for replacement, but there is still plenty of life in the fronts. So, having read a lot of good things about the Micheliins, I would like to switch to them, but can I run non-run-flats at the rear whilst still having run-flats at the front, until they are due for replacement?

A separate question would be, what is the difference between Pilot Sports and Pilot Super Sports, aside from price, and what factors would I be taking account of to decide which is better for me?

Thanks very much in advance,

Graham

Hi
I would strongly recommend never mixing Runflats and non Runflats on any car.
Simply as the difference in stiffness and construction will make the axles handle and react very differently. Almost making a car behave like it's disconnected.
Yes, it can mean if you are due only changing two tyres, and want to switch it's a big cost. But the behaviour difference is significant.
Without going deeply into the construction differences, the PS3 is a single tread compound and the PSS has two compounds on the tread. Meaning it is more suited to higher performance vehicles. As the PSS is on the M1 as standard fit, they would suit your car particularly well

Although I partly agree, I know the difference near the limit on the PS3 vs. PSS, and it's fairly huge. Don't get me wrong the PS3 is a great tyre, but the design and materials in the PSS mean its a different beast

Our developers often say that in the dry you use less than 10% of the tyres potential 90% of the time, but in the wet it's 90% of the tyres potential 90% of the time!