I removed the spare on my Tacoma last week , The wheel is rusted but the Tire looks brand spanking new and has 30+ lbs of pressure in it. I have never filled it and unless someone is breaking into my garage at night and filling that tire then it has the original tire pressure. I am going to bet the dealer has been filling it and not telling us . Its a 2006 tacoma. Tire and Wheel are going to the junkyard in the next few weeks.