Tape belts are completely different case comparing with cheap chinese ones. This has to do with quality of rubber, tension and a lot of other reasons. A lamp of 12v 80mA is always the same no matter if it lasts for 1 week or 5 years. It depends on quality.
My problem, in this case, is why the resistor runs so hot and if it is normal. Maybe it is. But i need someone more experienced than me to confirm this.