As long as we are discussing old tires I thought I would mention the valve stem failure and recall of a few years ago. Seems Dill the manufacturer didn’t use a SPF ingredient to prevent valve stems from cracking due to exposure to UV rays.
We had two tires on the right side of my wife’s Windstar go flat because of cracking valve stems, once going ~65 mph on the freeway.
Just so happens that the right side of her van is exposed to the afternoon sun when parked in out driveway. No problem with the left side ones because they are in the shade when parked.
Needless to say I replaced all the valve stems and informed the car dealer, who was unaware of the recall.
So, if your car is garaged and only driven occasionally check your valve stems and replace if manufactured by Dill. (Unfortunately it only has their name on the bottom (inside the tire) and on the cap (if original).
Dill Valve Stem FailureYou should always install new valve stems with new tires anyway.
I forgot to mention, Dill has their valve stems manufactured in China. I found this out after the fact...
"The Master Cylinder"
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