So ive replaced my tyres with some new ones a while back (GDS3s). Tyre pressures all fine. Just recently my handling seems to have deteriorated. It feels very unstable/skittish at motorway speeds and attitude changes can be quite scary. Its definitely worse than it was. Just wondered if there are any known issues? (i have been getting a whining moaning noise from when using near or at full lock at low speed for quite some time, but it has been serviced since that started, with no change)