The tires are new, less than 2 months old. The tube in this tire is about 2 weeks old and has several rides on it with no issues. Rims is aluminum. Not sure on the wall of the rim, will have to go check. The tires is just not blown off the rim, the tube is blown. I will know more when I open it up but I assume split along the seam like the last one. Tubes were bought at different places and times.