I recent put some commuter tires on my mountain bike. They are Vredestein Monte Carlo. I also put new 26 X 1.25 tubes to match the tires.

Once they were mounted, the seating wasn't even, causing the tire to wobble. I deflated it, reseated, and reinflated countless times, but still the same uneven seating. The weirdest thing is that the seating is uneven on both sides, causing a depression in the tire. This is happening on both the front and rear tires.

I am thinking that it has nothing to do with the tire, but rather that the inner tube is not inflating evenly all the way around. Perhaps the place where there is a depression in both tires is a spot where the tube is not inflating as much as elsewhere. That's my theory, any others?

Also, any ideas on how to fix it?