tramlining

Hi I seem to have a nasty problem with "tramlining" at the minute. Just got the car on friday (Ibiza FR) the front alloys are wrapped in pirelli pzero nero's. Have driven with lots of 17" alloys in my past but these seem to be taking the pish! 0 - 20mph is fine 20 - 50mph is...

OK had the LCR a few days now, covered about 200 miles to and from work. The one thing that really stands out is how much is seems to follow the camber of the road. I find my self really holding onto the steering wheel. Is this a common LCR trait, or is it something more sinister? Giving...