Trailer tires ???

I have a Diamond City Trailer that is only 15 moths old and the two tires are "cupping" so bad that I am going to have to replace them. I bet the trailer has less than 1500 miles on it as I live within 5 miles of the boat ramp where I fish most of the time. Cupping means the outside edge of the tread on both tires looks like someone took a chunk of rubber out about every 2 or 3 inch around the entire diameter of the tire. I had the trailer tires balanced the day I bought the trailer with less than 100 miles on them.

I would like to get USA made tires in 215/ 75 r 14 ST. Any suggestions? Anyone used Goodyear Endurance?

Thanks

I have Good Year Marathons on mine and they're doing good, been about 4 years now.

I have the endurance, made in the USA. I probably only have 2000 miles on them.
So far I am really impressed. They pull really well.
Another thing mine were made in April I bought them in June.
I would buy them again. Just don’t have enough miles to give you a good idea on wear.


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I went through a set of tires every year for the last 5 years with the same cupping problem (tried different brands) and switched to the new Goodyear Endurance 215/75 R 14 ST last spring and they show no signs of cupping and very little wear. I would definitely buy the same ones again.

The trailer manufactures put the cheapest tires on they can find to keep cost down. Get the endurance.

:hesaid

And, the majority of these tires are speed rated for a certain speed. A lot of people don't know that. Cupping is usually due to a condition called "cording". The boat bounces which breaks the cords in the tires. You really do get what you pay for with boat trailer tires.

You might try taking it to a trailer shop. I had one do that on multiple sets of tires and finally took it to a shop. They said the pre-arch in the axle was too much for the weight of my trailer. He took some of the arch out of the axle and it hasn't torn up a tire since. Just an idea......

What ever brand you get, get them in radial. Cupping is a natural chartiristic of bias ply tires in a free rolling application. Almost impossible to stop. And run at least 45 lbs of pressure.

What does the whole rig weigh, What is the axle rated for, what tires and what air pressure do you run?

At that kind of mileage I’d be looking at the trailer. Cupping is a sign of tires hopping. The normal source is a worn suspension or a bent axle. Your suspension may not be worn, but something could be loose. Could be you are too lightly loaded for the camber in your axle.

Loose bearings can cause that too.

Air pressure and bearing, maybe.

What brand tires came on the trailer.?

Before I spent money on tires I would take my trailer to the shop and have it checked out. I'm sure it won't cost much for them to look at but it could save you from buying tires every year.

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Quote:

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Originally Posted by Barnacle Bill

Loose bearings can cause that too.

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I've been told I have a loose bearing or two so that might be why I'm getting bald on top and not my age . :)

Both of my tires were cupping on both sides of them. I asked around and got a few replies, none helped. I carried it to a trailer shop, $150 later nothing found wrong with the trailer. A few things I learned. Bias ply tires form a flat spot after sitting for a couple of days. Radials take a while longer. They need to be rolled a bit before towing, 12 to 24 hours. Tires bounce or flex, higher speeds are worse, may want to slow down some. Tandem axles are better than single axle trailers.

I have owned a single axle trailer for 20 years I'm on my 3rd set of tires none that I have used wore funny. The tracker tires that came with it lasted just as long as the marathons I bought now I have a cheap set of off brand and they have been on it for 4 years and have seen 10k miles at least. So if you have radial tires I may have your trailer checked.

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Most trailer axles have a little tow in built in. Being yours is new it could of been installed backwards where it is towed out.

I replaced my tires last year, and had similar cupping. The cupping was due to under-inflation. I replaced with Goodyear Marathon, made right here in USA, and are speed rated for 70 MPH.

There was/is a whole thread about it/them, let me see if I can find it for you.

OE

Here it is, all the spec's for a Good Year Endruance, and its speed rated for 87Mph, not 70.

http://www.crappie.com/crappie/mecha...trailer-tires/

https://www.etrailer.com/dept-pg-Tir...d_Range_D.aspx
https://www.etrailer.com/faq-trailer...questions.aspx
https://www.etrailer.com/faq-trailer...ng-tables.aspx

I put the Karrier radial tire on my trailer. I also went to a load range D instead of the original C that was on the trailer when I bought it. The tires I put on are speed rated up to 81 MPH.

Best to take to a trailer shop and have it inspected. I purchased a new boat and trailer, when towing the unit home, I noticed that the tires were shimming.
Took the unit back to the dealer and had a bad rim. Rim replaced and under one thousand miles, I noticed uneven wear on the tires. Returned to the dealer and had the axle alignment checked. Out of alignment. New axle and set of tires and no more worry.

I'm a retired tire shop manager and I can tell you none of the trailer tires are made in the USA. Goodyear just started making some within the last year and it is not the Goodyear Marathon. I cant remember the name but they are made by Goodyear. All other trailer tires are made overseas. The tires on your trailer maybe Bias If they have a D in the sizing it is bias, if it has a R in the sizing it is a Radial. Also trailer tires should be run at or close to maximum inflation which is on the tire. Another thing if possible try and upgrade to a 8ply tire. Most of them will come with 6ply. That will depend on the size tire you have if they offer it in 8ply. the cost should only be a few dollars more for the 8ply, I mean maybe 3 to 5 dollars a tire more.
Hope this helps you!
Mark

Quote:

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Originally Posted by Bassmar

I'm a retired tire shop manager and I can tell you none of the trailer tires are made in the USA. Goodyear just started making some within the last year and it is not the Goodyear Marathon. I cant remember the name but they are made by Goodyear. All other trailer tires are made overseas. The tires on your trailer maybe Bias If they have a D in the sizing it is bias, if it has a R in the sizing it is a Radial. Also trailer tires should be run at or close to maximum inflation which is on the tire. Another thing if possible try and upgrade to a 8ply tire. Most of them will come with 6ply. That will depend on the size tire you have if they offer it in 8ply. the cost should only be a few dollars more for the 8ply, I mean maybe 3 to 5 dollars a tire more.
Hope this helps you!
Mark

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The Goodyear Endurance is made in Alabama. General makes Tow Max tires in Mayfield, Kentucky.

Yes the Goodyear endurance is the Goodyear that is made in America, but the marathon was made overseas, according to tire rack the power king Towmax is made in china. here is a link that shows General made in china. Not that they are bad tires, heck I sold Prometer and Zeemax and had good luck with both of them. maybe had 2 or 3 come back in 7 years I sold them.
Mark

https://www.alibaba.com/showroom/gen...ler-tires.html