Need new tires due to uneven wear

My wife has a 2019 Tahoe LT 4wd with the stock size 265/65/17. We put in Michelin ltx tires about 25k miles ago.

I always felt that the car felt weird when turning and moving fwd in lots. We had the alignment check and fixed but it still felt odd.

We rotated the tires about 3 times and even had the alignment checked again after maybe 10k miles.

That said the outer edges of the front tires wear quicker.

In the market for new tires.

1. what tire would you buy?

2. they stock looks small, maybe go up to 265/70r17 or 275/65r17?

3. how can I recalibrate tire if we move up in size?

4. what else can be causing the tires to wear like that?