Just for reference; when you get a flat tyre in a 700x40c tyre and only have a 29x2.5 inner tube remember to swap the massively oversized and stuffed in there tube over once you get home. Don’t forget all about it and ride it for 100’s of miles before getting another flat because the tube has rubbed on itself and made a huge hole. Luckily I had a more suitable tube with me last night. A 650x50 :/ Still it got me home!
Just for reference; when you get a flat tyre in a 700x40c tyre and only have a 29x2.5 inner tube remember to swap the massively oversized and stuffed in there tube over once you get home. Don’t forget all about it and ride it for 100’s of miles before getting another flat because the tube has rubbed on itself and made a huge hole. Luckily I had a more suitable tube with me last night. A 650x50 :/ Still it got me home!