I been using these for years , on bikes and cars ,although the law has changed via eu,repairs should be carried out from inside the tyre using a mushroom type plug . It can't come out unlike tempory plugs .
These are classed as temporary fix and should be used under speeds of fifty , but in saying that I've never had a problem the AA even use them .
But I do suggest you get this type plug, it's shapped so it can't come back out with the added benifit of the glue , you can also get canisters that will inflate the tyre to 10 psi to get you out of trouble . Holes must not be bigger than 6mm
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