There could be something in the size making a difference. My previous car (2008 Mondeo 1.8 TDCI) was running 18" PHI's. They had very little grip from new and the car even managed to loose traction in first and second gear. It would never do that with the Avon's that were fitted previously.
When I looked at my 159 Ti 2.0 Jtdm I noticed it had PHI's fitted. I asked the dealer to change them, but because they were brand new that would not happen.
Anyway, to get to the point, after a week in the 159, I can confirm that I have noticed no problems with traction or grip. They feel like a completely different tyre to those fitted to my old Mondeo.
Last edited by Bigh; 12-02-14 at 20:57.