What happens
Kerbed, split or bulging on the M5: is it safe to drive?
Kerbs on the tight slip roads at Birchley Island and the concrete edging along the elevated M5 can catch wheels without the driver noticing. The damage tends to show later, when the car has sat through a shift in a West Bromwich retail park or overnight at home in Bartley Green: a lump on the sidewall, a gash with fabric visible, or cracking across the tread blocks after a heavy pothole strike.
Photograph the bulge or cut, then the size code beside it, and send both. A swelling on the side tells us the cords inside have parted, and a casing in that state may let go at any moment, so our advice is to keep it off the M5, even for the short hop to Frankley. Surface scuffing that never reaches the cords can wait. Either way the verdict is honest, you hear the cost before we set off, and the new tyre is fitted where you parked.
Need something else? Our pages on emergency tyre replacement on the M5 and locking wheel nut removal explain those jobs.