Many apologies for asking such a dumb question, but:
On prepping my bike this morning for a ride, I notice the back tyre is flat. I found a screw embedded in the tyre. So, I remove the screw, take the wheel off and lever the tyre off the rim. So far so good. But, I can't take the inner tube out as there is just not enough space to get my hand in to pull it out. I am probably missing something really obvious. Any suggestions on what I've done wrong/should be doing? Thanks, and sorry again for being so dumb.