bike tires
oh I am so ridiculous. you'd think I could look at the tire before I despair about finding others narrow enough. the original tire is a specialized armadillo 27 x 1-1/4. fairly low profile (short sidewalls) and more flat-u shaped than pointy-v shaped, but quite possibly that is because the tread is almost entirely worn off. for future reference (both for the type of tire and for an example of me being super lazy about doing obvious things).