Hi this is what I do when I get a nail in a tyre...
Take out the nail with pliers, get some very good strong glue (the 2 part stuff you mix yourself), then get a short wood screw (but thicker then the nail) and spread the glue everywhere, in the hole and around it and then all over the screw, use a screw driver to tighten the screw it in hole. Pump the tyre up before the glue sets to make sure its sealed properly..job done
Everyone on here is now going to call me dodgy and a ***** but I did this on my M5 and it was fine even at 170 mph