This happens with my car as well. I used to think it's because I'm hitting patches of ice/snow/sand, but I think it's just because of the way the car is since others have reported the same problem.
Essentially, the problem is that all four wheels of a car takes a different path around a curve. The tighter the turn, the more severe the difference. This problem affects the front wheels the most since they are responsible for "turning" the car. As such, all steering mechanisms in modern cars have geometry that accounts for this need by turning the inside wheel more severely than the outside wheel.
I believe this issue affects our cars due to a combination of factors:
1. A very active all wheel drive system that applies power to the front wheels at low speeds.
2. Very wide tires that do not scrub quietly like narrow tires would.
3. Summer tires that are very hard in cold weather, especially when the car is cold.
4. Very wide track at the front and rear, amplifying the need for different steering angles.
5. Relatively flat front tire camber even at extreme turning angles, resulting in a larger contact patch.