[QUOTE="Hog"] The kind where you put a plug in from the outside covered in glue. Keep one under your seat![/QUOTE] To get to "under the seat" on my CBR you have to take the side panels off (two plastic screws) and unbolt the seat (10 or 12mm). Guess where the toolkit is kept. [QUOTE] A tyre dealer can do it in a better way too, from the inside. for a 500 mile tyre it's worth it.[/QUOTE] I'll get it done, yes. God knows when, as I'll have to take the wheel off the bike. With my minimal mechanical skills, a wedding this weekend, my hallway to finish painting and the CD to fix for the Loony Tours trip - it might be some time.