How the job is done
Tyre trouble on the A406 North Circular after hours, repaired where the car is.
Many late punctures near the A406 are straightforward: a nail from the gutter near Henlys Corner found as you park in Finchley, a screw from the Chiswick roundabout slip road heard hissing in Gunnersbury, or a slow leak discovered after a late shift in Wanstead. Apart from the hole, the tyre itself is usually fine. The problem is the clock, because the North Circular rush hour starts early and no tyre shop opens in time.
Overnight, BS AU 159 applies exactly as it does by day. With the tyre off the rim, the screw or nail comes out, the liner is checked for damage from running soft, and a hole measuring at most 6 mm, sitting in the central tread, gets a patch-plug bonded from within. An overnight repair is quoted by phone at the same price as a daytime one. An unrepairable tyre is explained to you before a replacement is ever mentioned.
Need something else? Our pages on locking wheel nut removal and burst tyre replacement on the A406 North Circular explain those jobs.