Sorry to revive this thread. Thought I'd update this for future reference.
Scratch my experience with the Kent ("Goodyear") tubes. Went out to my bike today and discovered the tire was flat. There was a gash in the tube on later inspection. The bike is new, and both the rim and tire have no issues or any rough areas or anything that could cause the tube to gash like it did. Furthermore, there were no foreign objects in the tire, otherwise I would've either found them or they would've fallen out of the tire onto the floor. Nothing.
The tire held air well for a week while the bike was inside. Tire was mounted fine. Hmm... guess I'll add Kent tubes to the list of bike products I won't buy. I think I'm going to try that Michelin Protek Max tube... it has good reviews and looks really sturdy.
Even worse was today was the first time riding the bike on the new Kent tube. Oh well... it'll make good rubber bands.
Last edited by fullergarrett; 02-12-19 at 10:31 PM.