04/05 Left Drift Frequency

[online]

I know there are a number of posts of 04 Solara left drift. My question: does the drift always happen or intermitant, and does it happen at a certain speed range. The reason I am asking is I just picked up my 05 Convertible. At times on the highway I feel the care is drifting to the left when I take my hands of the steering wheel. At other times it seems to track straight. I've also been paying attention to the condition of the road and if I was on a crown in the road but that doesn't seem to be the case.

Any input is greatly appreciated.
Thanks

[TW85]

My car always drifts. Obviously it is more pronounced at higher speeds. Only time the car tracks completely straight is when the road slopes to the right.