Steering Vibration at high speeds - 2021 Model 3

Hi all.

I have a 2021 Model 3 with 59,000 kms (36,000 miles). The last few months I've noticed that once the car is at or above 110 km/h (~70 mph), the steering will vibrate as I go faster. Still on original tires (rotate them annually), no accidents and no major potholes that I'm aware of. Is this an alignment or tire issue (or something else). Taking car into Tesla service in a couple weeks). The vibration is not bad but noticeable.

Thanks