Repair units come in sizes, and matching the unit to the injury is a real part of doing the job properly rather than a detail. The stem has to fill the injury channel without being forced, and the patch has to be large enough to spread the load across sound liner but not so large that it crowds anything else. Use a unit that is too small and the channel is not properly filled. Use one that is too big and you have buffed away more liner than you needed to. Neither shows from outside, which is exactly why it gets skipped.
So the sequence at the car is: clean the injury out, measure it, choose the unit that matches, buff and prepare the liner to the right size for that patch, and fit it from the inside. Then rebalance. It is a few minutes more than a rushed job and it is the difference between a repair that lasts the life of the tyre and one that fails in a year. We do it beside the vehicle wherever it is parked around Cambridge, whether that is a hospital car park off Hills Road or a drive in Arbury.
BS AU 159 is not a technicality; it is the line between a tyre you can trust and one you cannot. In practice that means the wheel comes off at your kerb in Arbury or wherever you have managed to park, on the A1303 included, the tyre comes off the rim, and the inside gets inspected for damage you would never see from the outside. Same tools in Trumpington as in Newnham, same on every call. Valve in Arbury, balance in Romsey, pressures before we go.
Puncture repair in Cambridge is part of our wider puncture repair cover. For puncture repair in Cambridge, call 07717 389637 or send us your details for a price.
Cambridge parking is spread across park and ride sites, hospital car parks and residential permit streets, none of which are places you want to be moving a car on a soft tyre. Bringing the machine and the full range of repair units to the vehicle means the injury can be measured and matched properly rather than repaired with whatever happened to be in the box.
A tyre off a car near Romsey had a previous patch far too small for the injury under it. Air had been tracking around the edge for months.
A driver near the Science Park had a nail hole that cleaned out to five millimetres. The right sized combination unit went in and the tyre has held ever since.
A vehicle on Long Road had an injury beyond what any car tyre unit is designed for. Fitting the largest available would have been a bodge, so it was replaced.
Yes. The stem has to fill the injury channel and the patch has to spread the load across sound liner. Too small and the channel is not filled, too large and more liner has been removed than necessary.
Around six millimetres across once cleaned out. Beyond that no repair unit is designed to fill it properly and the tyre should be replaced.
For the remaining life of the tyre, when it is done to the standard with the right unit. Repairs that fail early are almost always the wrong size, badly prepared or done from outside.
Yes, provided we can get the van reasonably near the car. Tell us the car park and the level or row when you call.
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