Roger said: [QUOTE] Obviously I should have been clearer - with no air in the tyre I cannot get the bike anywhere to be fixed! So need a temporary solution - I'm sure riding 20 miles to my nearest bike dealer with a completely flat back tyre is the most dangerous thing of all - I did notice the bike being some what hard to control as I limped home the other day after picking up the nail.[/QUOTE] Just whip the wheel off and go to the dealer in the car, or if you haven't got one, get a lift or jump on a bus (taking the wheel with you).