I just put a Bell extra thick inner tube on my rear wheel. The stem is so fat that it won't go all the way through the hole in the rim. Most of it is sticking through but about a quarter inch is inside the rim. Will this cause any problems for me in the future?

This tube does weigh a lot but it is offset by leaving my tools and patch kit at home. My maximum distance away from home is seven miles in my town so I could walk home if necessary.