How the job is done
Found it flat in Buckingham? Leave it where it is.
A flat in Buckingham feels more stranding than in a town with a station. No trains, the nearest large tyre centres in Milton Keynes or Bicester, and a spare that is often only a sealant kit. People are tempted to drive slowly along the A413 or the A422 to reach one. A mile on a flat tyre shreds the inner sidewall, turning a repairable nail into a new tyre and possibly bending the rim on a rural pothole.
Hold off moving it and send a photo of the flat, the sidewall size and your postcode, plus a what3words reference if you are in a village like Padbury or Tingewick. With the car jacked and the tyre off, the fitter hunts for the cause: a patchable puncture, a leaking valve or a rim seal. Replacement is the fallback only when the tyre cannot be saved, and both prices are given before the van sets off for MK18.
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 Buckingham as well.
The same Brent Cross team also handles broken tyre replacement in Buckingham and new tyres fitted, booked on the same call.