What happens
Found it flat in Welwyn Garden City? Leave it where it is.
A Garden City flat can appear overnight or during a working day. A commuter returns to a sagging tyre by the station, New QEII staff find one after a long shift in Hatfield Hyde, and a Panshanger family discovers the car low on the drive before school. Driving even a short way on a flat tyre crushes the sidewall from inside, turning a repairable nail into a write-off.
Leave the Garden City car untouched and ring with the spot, whether that is a Panshanger drive, a Peartree garage court or a numbered station bay. With the wheel off, the tyre is checked inside and out, and only then is it patched from within or swapped for a new one. Give the sidewall size in case a replacement turns out to be needed; the price for either outcome is agreed on the phone.
On run-flat tyres? They behave differently once deflated, so check the handbook's limits and read our page on run-flat tyres; we fit replacement run-flat tyres at the car in Welwyn Garden City as well.
Need something else? Our pages on broken tyre replacement in Welwyn Garden City and wheel balancing explain those jobs.