I tried upgrading to some 28mm but as you can see clearance is very tight. In some spots, the tire doesn't fully clear the brake (Tektro R350). The fork barely has enough clearance.
Is it worth trying to get an extra mm or 2 with a different brake? I searched around and I saw Tektro has long-arm options, but it's not the arm-length that's limiting, it's the shape of the top of the brake itself. Any brake recommendations? (already read this post - I'm hoping to stick with Tektro or any other fairly inexpensive option, and I only need the front brake.)