At the car
Found it flat in Sutton? Leave it where it is.
A flat tyre in Sutton can be found, not felt. In the Sutton station car park after the London train. On a Wallington permit street first thing. On a Hackbridge drive after the weekend. Perhaps a Kimpton nail, perhaps a valve weeping, perhaps a slow leak that finally lost the argument. The tyre may well be repairable still, but running it on the rim from Sutton station to Carshalton would wear the sidewall through and scar the wheel.
Message 07473 720871 with the tyre wall code, the SM postcode and the exact spot: station car park level, Wallington street or Hackbridge drive. Once there, the fitter reinflates the tyre, traces the leak and tells you which way it goes: an inside patch for a small central hole, or a replacement from the van where the tyre is damaged. Whichever it is, you have the figure before the van leaves NW2.
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 Sutton as well.
The same Brent Cross team also handles broken tyre replacement in Sutton and wheel balancing in Sutton, booked on the same call.