Let me pour some more fuel on the fire.
Here's my right front GY BB. It's been mounted and driven on for 14 months. It is parked in the garage when not in use.
Here's my right rear GY BB. Been mounted and driven on for 14 months.
This tire is on the front of my F350 diesel dually. It's a Michelin and has been mounted and driven on approximately 18 months. This tire has 1/2 the miles on it that the GY BB's have. It's parked in the driveway and soaks up the sun and everything else.
David