Tires

[Larry Herman]

Based upon my experience and feeling on tire longevity, I would be concerned about running the 1999 tire at speed, and would not use the 1989 tire, period.

I have seen too much deterioration in relatively new tires to risk running old ones.  Though not directly related, I have seen other types of tires deteriorate very quickly, i.e. bicycle tires.  I have had them dry-rot just hanging inside a heated garage for only a few years.  In fact, I just got a flat yesterday when a tube ruptured inside of the tire.  There was no external damage to the tire, and the carcass was smooth and 100% intact.  The tube inside had lost it's elasticity and just blew.