Slow punctures - how slow is 'slow'?

[darrsi]

if the tyre is over half worn, or newer if you like, get a can of the tyre sealant stuff from Halfrauds and stick that in. Problem should go away then.

That's what i did last time, and it got me out of trouble eventually when i heard a pop as a screw went in at a shitty angle but the tyre didn't deflate at all so i was able to immediately ride straight to a bike tyre shop a few miles away and get positively mugged off for a nice new T30.
It can be difficult to put in though, as it's very small beads of rubber and it gets clogged up in your valve as you try to squeeze it in so you need something pointy to hand to unclog it and a proper air pump, not a foot pump, to help things as well.


Once it's in your tyre it can't be repaired after that, small leaks are okay and will just seal themselves but a tyre fitter will not even consider plugging a tyre with that gear in, which is fair enough.