Emergency fitting on the M45
The workshop comes to the M45.
Off the M45, reaching any tyre workshop means driving a damaged tyre further along the A45 or the A426, or paying for a tow. Neither makes sense when the problem is a single wheel. For a car left at Watford Gap, on a Dunchurch street or outside a Rugby home, the workshop has to come to it instead, carrying everything needed to finish the job at the kerb without the car being moved an inch.
Inside the van ride a tyre changer, a balancing machine, torque tools and racks of common sizes. Give us the sidewall code and the location, and the figure is fixed before the van leaves London. Beside the car the fitter jacks it, unbolts the damaged wheel, swaps the rubber on the changer, spins it true on the balancer, bolts it home to the maker's torque and loads the old tyre. The car never moves.