Having spent some years patrolling A roads and Motorways I have lost count of how many vehicles got punctures at speed 70ish and by the time they could pull over the tyre was shredded, all the gunk in the world won't help that. First thing I did with my Ford ST was buy a space saver from flea bay. Sadly with my wife's Audi they have put the battery in the wheel well so I can't do the same.
