cmjr1966, yeah I know 25 years is a bit extreme but I just wanted to say that you weren't the only one with old tires.
I'm sure there is a safety factor in the mfg spec of 10 years and the insurance industry would be more than happy to see us all change our tires less than 6. I've worked with design specs that had a safety factor of 6 built in.
Also have to keep in mind how things are made and where they come from and what they are made from today. I've got a set that are just turning 7 and they oxidize and turn brown just sitting and need to be cleaned at least every couple weeks. The 25 year olds never oxidize. I'm no expert on this of course but I bet there isn't to much difference, as they stand, in quality between the 7s and 25s.
Remember when we used to re-cap tires? Talk about separation but generally it was the fault of the re-capping process not the original tire. A little before my time though.
But I hear ya, and I'm not doing anything crazy just going slow (well I try) and straight (well I try) and no freeways but there is a canyon near by with some nice hairpins that keep callin' to me . . . . drive me, drive me . . . . zoom, zoom! ZOOM!!! LOL
Justin
How well could this apply?