Front suspension sag or alignment problems?

Hey, I have an 07 double cab sr5 4x4 with 174000km's. I run 265/75/16 Hankook dynapro ATM's on the corners and since putting these tires back on from the winter I noticed an issue.

On the front drivers side, the wheel started rubbing the mudflap when turning left and hitting a small bump. It actually happened in a parking lot at a very slow speed with a small dip leading to a storm sewer drain. This issue was not present last summer when I bought the tires. I did some mild off roading last year with these new tires and if there was an issue I would have noticed.

Two things come to mind, one being alignment but the truck drives fine, was never in a collision, ditched or anything. The other is spring sag in the front. Given the km's on the truck, what do you guys think?

As a side note the truck has not been abused and has spent 90% of it's life on public roads.