Air leaves through a nail hole slowly. The damage that follows arrives fast. Once pressure drops far enough for the sidewalls to fold over, the casing starts working against itself, and at the speeds people hold on the A10 that builds enough heat within a mile or two to cook the liner and break the cords. Which is the real reason for ringing at two in the morning instead of waiting for somebody to open at eight: your tyre is repairable right now and may well not be after a run down towards Enfield. Properly done, it means lifting the tyre clear of the wheel, reading the liner and the cords by eye, opening the puncture channel out with a reamer, bonding a plug and patch into it to BS AU 159, then spinning the whole thing back into balance. That happens at any hour, on any day of the year, wherever the car has come to rest.
Plenty of 24-hour tyre lines will send somebody out at 3am to look at the car and book it in for the morning. That is a callout service, not a repair service, and it is not what we mean by the phrase. Across Hertfordshire, every day of the year. The Goffs Oak phone and the Flamstead End phone ring the same fitter, any hour. Midnight in Rosedale, midday in Bury Green, the same call either way.

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Fast dual carriageway miles are hard on a soft tyre, so the overnight jobs around Waltham Cross and Bury Green are usually a race between how quickly we get there and how far somebody has already driven on it. We work through the night here precisely because the morning A10 gives punctures no mercy at all.
A screw head glinting in the tread, spotted by torchlight on a residential street. Central damage, still holding some air, so the outcome was never in doubt. It was mended, balanced and back on the hub before the driver had finished a cup of tea.
The A1170 collects debris the way older roads do, and this one had put a flint chip through the tread. The casing came apart cleanly at the kerb, the injury was reamed and patched from within, and the wheel went back on the car balanced.
Someone had emptied a sealant can into a perfectly repairable puncture before ringing. The foam had already coated the sensor and the inside of the casing. What would have been a straightforward repair turned into a cleaning job and then a new tyre, which is the usual ending with those cans.
It depends where they sit and how far apart they are. Punctures too close together weaken the same area of casing, and there is a point at which the honest answer is that the tyre has done enough. We measure the spacing rather than guessing.
It gets handled carefully, because the valve and sensor are one assembly on most modern cars and they snap if treated roughly. If yours is already dead when the tyre comes off, you will hear about it rather than finding out at your next service.
No. A plug fired in from outside seals the hole and ignores the cords around it, and nobody has looked at the inner liner. The recognised method is a combined plug and patch fitted from the inside, which is what BS AU 159 describes.
Sometimes, and only after checking whether it has been driven on with no pressure. Many manufacturers rule out repair once that has happened, and the sidewall shows the evidence when the tyre comes off the rim. We look before promising anything.
That is a common arrangement here. Leave the keys or the locking nut key where we can reach them, tell us which car it is, and it is mended and back in the space before you come off the platform.
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