New: Goodyear 12" Street Folding (57-203, $15)
The rubber had worn through to the light brown base material in one spot. Schwalbe Big Apple lifetime: 515 km.
The new size has minimal clearance. To prevent rubbing, I had to adjust the fender (loosen screw at fork, push fender away from tire & re-tighten).
Tire change steps:
- Flip Firefly upside down
- Disengage V-brake
- Unplug motor cable
- Remove disc brake (5 mm Allen wrench)
- Remove wheel (17 mm wrench)
- Let air out of tire
- Remove old tire with motorcycle tire irons and replace (easy peasy)
- Pump to 30 psi
- Reassemble
Note that despite its name, this Goodyear tire does not actually have a street tread, and I can't recommend it.