Please can you tell me the regultions regarding repairing motor car tyres.
ie are patches permitted at all.
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I presume you're talking tubleless tyres here. As far as I'm aware the old 'plug' type puncture repair has been illegal for years. The current repair method is to remove the tyre and vulcanise a repair patch on the inside.
However, there are regulations restricting what punctures can be repaired. eg, there is a maximum lenght of puncture that can be legally repaired and damage to certain areas of the tyre may not legally be repaired, for example sidewalls.
Most tyre dealers will have a poster somewhere which defines the rules. Any reputable tyre dealer will have this, so pay them a visit.
Regards
john
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I think you mean PUNCTURES,
Modern tyres when they sustain the vehicle weight and motion when deflated tend to be damaged beyond repair this is not always noticable at first .It may sound expensive but most times for safety reasons it is better to buy a new tyre
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Gavin
I entirely agree with Andrew Bairsto's reply ie buy a new one, but, if you must, repairs can be carried out. The rules that I have to hand for a repair system marketed under the name of "Minicombi", which I think a lot of the trade use, are quite complex. They relate tyre speed rating to size of hole and where in the tyre it is. In essence this boils down to: only holes made at 90 degrees + or - 10 degrees to the tread surface, and only those in the centre tread area, ie the bit that sits on the road can be repaired, but you need to read the instuctions to be sure. The major danger associated with repairs, as I see it, is if the steel in the tyre is exposed to allow rust then over time this will weaken the tyre and could cause sudden failure probably at high speed or under heavy cornering. The system I mentioned should prevent this corrosion, but I would only want to use such a repaired tyre as a spare or at a push on the nearside rear.
Regards.
Don Cox
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