Flat Tire, Five-Minute Fix
Spin the wheel, listen for hiss, and feel for sharp grit. Check the inside of the tire with a gentle sweep; glass hides. Remember the old rule: find what caused the puncture before installing a fresh tube.
Flat Tire, Five-Minute Fix
For tiny holes, a self-adhesive patch works in seconds. A sidewall cut? Boot it with a folded receipt or dollar to prevent bulging. If time is tight, swap the tube first, then patch the old one at home.