<VV> Tire life

[Bryan Blackwell]

For those of you who wish to read further on tire life (in years), here are links to some studies on the subject from the folks who declared our Corvair safe:

NHTSA Tire Aging Test Development Project Phase 1:
https://one.nhtsa.gov/DOT/NHTSA/NRD/Multimedia/PDFs/Crash%20Avoidance/2009/811201.pdf

NHTSA Tire Aging Test Development Project Phase 2:
https://www.nhtsa.gov/DOT/NHTSA/NVS/Vehicle%20Research%20&%20Test%20Center%20(VRTC)/ca/capubs/811780.pdf

Personally in the DC area I go with 10 years from the sidewall date.  Since our Corvairs don't get a lot of miles, choosing to change them by age rather than tread depth seems to make sense, and some of our other tires (winter, trailer, etc.) have the same issue.

BTW, if you don't know how to read date codes, I have a how to here:
http://autoxer.skiblack.com/tires.html#age

--Bryan