To clear the air on whether the GY ENDURANCE is a success.
"A couple of thoughts:
Background: I spent the last 10 years of my career analyzing failed tires. It's amazing how much information you can pickup when you look closely and know what to look for. So - Yes - we can tell the difference between a road hazard failure and a structural failure not caused by a road hazard (or 90% of the time, anyway.)
The company I worked for had a good feedback system - known as the adjustment system. We credited dealers for tires they sent back that failed for a variety of reasons, including non-road hazard failures. Since we paid for the shipping, their only cost was the time and effort to fill out the paperwork. We got enough tires back to be able to plot year to year progress, and our data reached back decades.
To give you guys a feel for the volume of data we had, the production levels every year were in the 10's of millions, so even a 0.01% return rate meant thousands of tires.
One of the things we noticed was a consistent year to year return pattern. Returns for non-road hard failuires was tied to the summer heat. We hardly got any retirns in November to March.
Returns peaked in the third year after production, but you could get a quantifiable sense of how well a tire was doing after the second year.
I also spent a lot of time purusing the internet to get a feel for the amount of complaints conmpared to what was being sent back to us. It was clear that the complaint level was small compared to the quantity of tires we got back, but you could kind of gauge the relative performance.
Having said that, I started tracking the on-line reports of failures of the Goodyear Endurance ST tire line when it was introduced in the fall of 2016. That means the first production is in the last few months of the 3rd summer, and the second year of production is in the 2nd year. Because I have not seen any reported non-road hazard failures - compared to previous reported failures for the Marathon, I am declaring that Goodyear has fixed whatever problem they had with their ST tires.
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CapriRacer
Visit my web site:
www.BarrysTireTech.com "
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