young Ed
Veteran
i meant to keep on the bike to inflate on the go rather than a proper pumpThey are good but a track pump, even a cheaper one will be more useful imho.
I believe it's a very complicated way of telling you to use the tube size that matches the tyre.
could have just written it in writing for the whally heads not knowing the tube size matches the tyre size!
![Tongue :tongue: :tongue:](/styles/default/xenforo/smls/tongue.gif)
![Wacko :wacko: :wacko:](/styles/default/xenforo/smls/wacko.gif)
Cheers Ed