Originally Posted by
DQRider
3) Use the next size smaller tube, since I have effectively reduced the volume the tube has to fill - there will be less material to get into little gaps and cause mischief. Or it will simply fail.
I would either leave the size unchanged, or use the next size Larger.
It'll be harder to install, and you need to take care to avoid pinching or folding the tube.
but the larger tube will be closer to the final inflated diameter, thus the rubber won't need to stretch as far.
Thicker, unstretched inner tube is less vulnerable.
It's a trick I've used to good effect on repeat customers with chronic mystery slow leaks.