The job, step by step
Tyre trouble on the M5 after hours, repaired where the car is.
The late-evening puncture is its own problem. You reach home in Smethwick or Quinton after a long drive down from the M6, the tyre is half down, and work starts at eight. No tyre bay opens before then, and a replacement feels excessive for a single screw in the tread. What you actually want is the hole sealed properly overnight, so the car drives normally by the time the alarm goes off.
That is a repair job, not a sale. Tell us it is a puncture, where the object is and roughly how far the car went after the warning. After midnight the fitter still removes the tyre and inspects the inside, because a night job gets the same BS AU 159 standard as a daytime one. Pass, and it is plugged and patched; fail, and you are told before anything else happens. The night price, the same as by day, is stated first.
Need something else? Our pages on locking wheel nut removal on the M5 and flat tyre help on the M5 explain those jobs.