Its very easily possible but if you crash and die I did warn you! Especially if you have the Pirelli runflats which are shocking enough for grip as they are. I'd seriously recommend against it and I have proven how loose a car can get on the track with such a mix of tyres. An extremely loose back end which is unpredictable in the corners makes for an interesting drive and scary on the way home too!

Like I say to anyone that asks me.... dont mix tyres! In the dry the differences will be smaller and maybe not even that noticeable if they are similar compound. But as with the country we live in, when it rains it becomes a real gamble on how well each tread pattern and compound works in the rain.

 

I mixed my tyres, I had Toyo's on the front and Runflats on the rear.
I was on a MINI run and the back end swung out and struck a car on the other side of the road, We were not driving fast and was in a resonable speed for the road conditions as the MINI in front which took the corner fine, I can only work out that it was due to the mix match of tyres, I would never mix them again...

 

It's normally fine to mix tyres - but not on the same axle (i.e. keep the tyres on an axle the same).

The key is on the MINI to always put your better tyres on the rear. This means that in the event where the adhesive limit is reached, the fronts will give way first, resulting in controllable understeer. If the rear let go first, you'll have tail-wagging oversteer which may look fun on a track, but is lethal on the road.

I ran runflats on the front, and goodyears on the rear until i killed the runflats, then ran goodyears all round.

 

Ok, think will prob. change all round to non run flats, just got quoted £235 for set of 4 fedral 205/45 17 , heard there not bad make for a budjet trye, should last few thousand miles..

 

I have just put federal ss595 on my Cooper and well impressed especially for the price.

 

There are a other threads on this, but the up shot of it is that NO you cannot mix runflats and non-runflats on the same car, even if you have them on the same axle.

 

I always thought it was as long as the tyres on each axel were the same, but I was told this is not the case when it comes to mixing runflats with conventional tyres.

I have just put federal ss595 on my Cooper and well impressed especially for the price.

I was looking at these; they have really good reviews and they're cheap! In the end I got Eagle F1s.

 

Had the Federal's on my previous MO after having them recommended by a driving instructor using them all day, obvioulsy a different way of driving...30mph everywhere ....but perhaps not so different with the way things are going, but I thought if they can take all the abuse and all the turning whilst virtually stationary then they should be okay for me. The last two I got were £115 fitted for the pair.

 

I have non-RF's on the front and RF's on the rear........................haven't had many issues with them but given some of the comments above it's maybe best I change them sharpish!