My passenger side rear 15" NCT tireGot ruined because of an unintensional over pressurization. Not a catostrafic failure - I just heard a loudish hiss at the rear of the car I couldn't pinpoint. On the 3rd floor of parking garage. When I came back it was flat. It failed on the inboard wall of the tire. I changed to the spare donut - got 70' - it was flat. I had to sit & think. Called a Firestone shop that was 2 blocks away and took the donut - they pumped it up, I went back and put it on, then drove home 20 miles at 50 mph. ADVICE: Keep your donut spare at 60 PSI ! Mine looked and felt hard, but looked a little low when it was put on and off the jack. Like I said, it was good for 70'. I put the NCT in the passenger seat. Will it fit anywhere else? Wisecracks will be graciously accepted. There has to be some fun in this. Lastly, I need a 15" rear, NCT tire. Did anyone save an NCT when they put on new tires? I don't put on a lot of miles so anything with any usable tread would be OK. If you have one please email me at: bob.hlavacek@xxxx Or call: (203) 723-4884 Thank you, Bob Hlavacek