traction

The ESC / TC warning light is flashing on my dash quite often when I go round left hand bends. Every drive it comes on at least two or three times. I'm not driving fast and the roads aren't wet or icy. I've lowered the tye pressures a little and it has helped but it still comes on every drive...

does anyone else find that the traction is very poor in the wet? I know that obviously all cars are worse in the wet, but I'm finding it especially bad in my gte. Been speaking to people at ATS and they claim that the Bridgestone tyres on it are a very hard tyre which could be the problem...