Goodyear Endurance trailer
tires replaced the Marathons. The Marathons had a maximum air pressure of 60 pounds. The same size 15" Endurance has a maximum air pressure of 80 pounds. The Endurance are US made. The Marathons were not.
I have 12,000 miles on a set of Endurance. So far no trouble. I had Marathons before with probably 25,000 miles on them. Getting ready for a trip last year and servicing wheel bearings I noticed a couple of them were out of round and starting to separate. If I hadn't caught that I would have had shredded
tires within 75 miles. They still looked good with plenty of tread and were not weather cracked. I had bought them in 2010 so they were seven years old. The material in tires decomposes with age. After six years they cannot hold up under severe service, especially in hot weather.
I pull double trailers quite a bit. The back trailer is a
light weight aluminum flatbed with 13 inch tires and it weighs 310 lbs. It carries an ATV that weighs 850 lbs. So there is less than 600 lbs
weight on each tire. I pulled off of I-80 for gas at Evanston, Wyoming last month and found the problem pictured below. The tread had come off the tire and tore the fender most of the way off. Just to clarify that trailer had Carlisle tires in it, not Goodyears. The tire was not flat. I camped there for the night and went to the Walmart the next morning. A new Carlisle tire was $29 plus taxes and fees that made it $43. But they only had one. So I stopped later that day in Salt Lake City and got another one. It cost me $192 to get a new fender welded on the trailer.
The trailer was a 2012 model so I thought the tires were six years old. This prompted me to look at the date code which I found to be 4510, the forty fifth week of 2010. The trailer had been built in 2011 with tires from 2010. I bought it as a 2012 trailer and that is how it is titled. Just because you buy a new 2018 trailer doesn't mean the tires were made in 2018. Check your date codes. They are on every tire. Don't try to run tires that are over six years old on any highway vehicle.
Another little known secret is that all tires with a DOT number have a maximum speed rating. Finding out what it is like pulling teeth. It can be looked up on the internet though. Many trailer tires are only rated at 62 mph.
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