I've just been out riding in the extreme heat for a few hours. Had an amazing ride did nearly everything bigger. Was ace!
I like to think i'm a very smooth riding, but the way my 'good ride' was going i went a bit too big for my ability and got a pinch.
Basically i want to know if i can just use a tesco 20" tube on my 19" rim. I'm not bother if they are weak it's very rare for me to pinch
cheers.