How the job is done
Found it flat on the M42? Leave it where it is.
A flat is often discovered after the drive, not during it. The car has sat overnight in a hotel car park by the airport, or a slow leak picked up between Redditch and Solihull has emptied the tyre while you were at the NEC. Every yard driven on a flat folds the sidewall against the rim, and a hole that was mendable becomes a scrap tyre by the A45, so leave it parked.
Ring with where the car sits, which bay or which drive, the size and, if possible, a photo of the tread. Jacked up and unbolted, the flat is then examined from both faces. A pinhole mid-tread gets a BS AU 159 repair; anything outside those limits is replaced with a tyre brought up on the van. Repair or new tyre, each figure is set out on that first call, before the M42 run starts.
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 near the M42 as well.
Other jobs we do at the car include broken tyre replacement on the M42 and locking wheel nut removal on the M42.