I posted in RR's 'snatching’ thread about my F1 Assym’s and how they totally spoilt the handling on fast corners - particularly right handers - the new Assym’s were fitted on the rear and my 'old' 6mm Conti's 2's put on the front.
The issue I had was feeling the back end squirm, the ESP light flashing with the accompanying snatching effect as the car braked one or more of the wheels. I only had the issue in the dry and this may be because I didn't push it as hard in the wet.
Anyway, I stuck with it for 6000 miles and noticed that it did improve a little after say 5000 miles but the issue was still there and an annoyance.
Last Saturday, I swapped the Assym’s to the front, put the Conti’s on the back and ‘hey presto’, handling issue cured - totally. I have really thrown the car around and it feels transformed – back to as it was when new.
The grip and feel of the F1’s on the front is good but no better in my opinion than the Conti’s.
For me, this has proven that having the F1’s on the rear did make a mess of things and I’d urge caution with this set up.
Pencruz