I've noticed a similar thing with my 2.0 05 ghia but I thought i was imagining it. I can't remember the road condition but I have a feeling that it was not just in the wet. The front tyres are Goodyear Eagle NCT 5 with more than enough tread. Not sure how many miles they've done as they were on car when we bought it.
I have Avons on my 2.0 TDCI,they were on when I bought it 12 months ago and will need replacing soon.Definatelly go for the same again.Good balance of grip in wet and dry,plenty of feedback through steering wheel so I can get plenty of confidence in cornering & acceleration especially in wet.