At the car
Found it flat in Didcot? Leave it where it is.
Didcot flats turn up in all the everyday places: the Foxhall Road car park after work, the Orchard Centre car park, with the site's permission, after shopping, near the Cornerstone arts centre at the end of a show, or on a Blewbury drive on a Sunday morning. Driving a flat tyre to a garage, even a short way down Broadway, crushes the sidewall and can damage the rim, which ends any chance of a simple repair.
Leave the car and call with its location and size, plus a note of whether the tyre is fully flat. Jacking the car up and taking the wheel off, the fitter inspects the tyre inside for crushing and outside for the cause. If the hole is in the tread and the tyre stayed parked, BS AU 159 allows a repair; otherwise a replacement is fitted. Whatever it costs is settled by phone ahead of the drive to OX11.
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 Didcot as well.
Other services from the same Brent Cross team: broken tyre replacement in Didcot and 24 hour tyre service.