Originally Posted by
7milesout
I wish Toyo made a 165 (or narrower) 14 inch tire. Basic, please lobby for such development!
Don't get me started...
Anyway, to the OP, as everyone stated, I would not recommend anyone use a tire older than 10 years (honestly I don't like over 5 in most conditions) BUT to play devil's advocate, there are a couple things you have going for you.
First, as you stated, you already have them... that is a big consideration in this economy. Extra cash is always nice.
Second, they have been stored in bags. This is huge. Ozone degredation is the biggest factor in tire aging whether you can see any cracking or not. I have stated that the cracking is the least of your worries, its the leaching of waxes and oils to the surface that then reduce your traction to a fraction of what it once was (and as I always state for weight, this is what killed Paul Walker)
Third, and this one is anecdotal and could easily be argued, but the Mirage is so light and low powered, that it doesn't really stress a tire in the way many other vehicles can.
Take all of this as mere consideration points, and if NHTSA asks, I said to replace them
Cheers,
Basic
Resident Tire Engineer
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View my fuel log 2014 Mirage ES 1.2 manual: 44.4 mpg (US) ... 18.9 km/L ... 5.3 L/100 km ... 53.3 mpg (Imp)