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Old 05-21-2015, 07:59 AM   #1
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Bearing repack look at this!

So we've had our trailer for a little over a year and since day 1 our brakes never seemed to work correctly. When I would initially hook up, the brakes would grab when I moved the manual slider over. But after a couple miles the brakes seemed ineffective. I read stories on here about seals leaking and such. So we pull the 2 left tires off to get started. My buddy tells me I have 2 different size tires! Literally one tire is 2 inches taller! Well after double checking everything, they are the same size and both are at 77psi. So we press on with the bearings. Not too bad for our first time but very messy. As for the brakes, well all 4 seals were leaking. Grease everywhere. Good times. I sure love quality work. Obviously the tire needs to be replaced as well. Any idea what would cause this tire issue? Oh and all 4 tires were made in 3212. Jerry


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Old 05-21-2015, 08:02 AM   #2
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So we've had our trailer for a little over a year and since day 1 our brakes never seemed to work correctly. When I would initially hook up, the brakes would grab when I moved the manual slider over. But after a couple miles the brakes seemed ineffective. I read stories on here about seals leaking and such. So we pull the 2 left tires off to get started. My buddy tells me I have 2 different size tires! Literally one tire is 2 inches taller! Well after double checking everything, they are the same size and both are at 77psi. So we press on with the bearings. Not too bad for our first time but very messy. As for the brakes, well all 4 seals were leaking. Grease everywhere. Good times. I sure love quality work. Obviously the tire needs to be replaced as well. Any idea what would cause this tire issue? Oh and all 4 tires were made in 3212. Jerry


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Old 05-21-2015, 08:15 AM   #3
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You said (After checking ) both tires are the Same? Is the Pic (Chop/Shop)? Youroo!!
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Old 05-21-2015, 08:18 AM   #4
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I know,I know, 1 tire has NO2 in it! Youroo!!
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Old 05-21-2015, 08:18 AM   #5
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Is the camper is "new to you"? (based on the manufacture date and you said you had it a year).

My guess is the original owner had a blowout and had all 4 replaced "on the road." Maybe the gas station did not have 4 of the same kind of tires but had two "that would fit" and still wanted to make the sale.

The tires being made in the 32nd week of 2012 could be another clue.

The blown wheel seals are another clue. They typically blow when an air pressure grease gun is used to flush out the bearings using the EZLube Zerks. WAY too much pressure to keep the grease in the hubs.
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Old 05-21-2015, 08:30 AM   #6
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Were the tires on the right side like this too? The photo almost looks like one tire is a radial and the other a bias ply tire.
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Old 05-21-2015, 08:31 AM   #7
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I guess a little more info is in order. They are Goodyear marathons ST235/80/16. All 4 have the same build date. Our RV is a 2013 and we bought it new. We just got it back last week from camping world for warranty work. I actually thought someone had swapped tires. Jerry


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Old 05-21-2015, 08:34 AM   #8
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Were the tires on the right side like this too? The photo almost looks like one tire is a radial and the other a bias ply tire.

All 3 other tires look the same. This is the only overinflated looking tire. All 4 tire pressures are within 1 psi of each other. This must have just happened because the tread looks normal and wearing evenly. Jerry


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Old 05-21-2015, 08:42 AM   #9
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Wow, that is a head scratcher all right.

You said all 4 tires are marked the same size, "They are Goodyear marathons ST235/80/16. All 4 have the same build date."; yet one is taller than the other 3?

I would take some measurements and call the Goodyear plant that made them.
Post the Manufacturer's code off all 4 tires and see if the "odd one" was made at a different plant from the others.

The warehouse will try to match manufacture dates and not necessarily plant codes when they ship to the tire dealer.

My Marathons were made at plant code "MD" - Gadsden AL.
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Old 05-21-2015, 08:58 AM   #10
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I hope you are going to replace that tire before you hit the road again. That tire is talking to you and it's telling you it has an issue and needs to be replaced.
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Old 05-21-2015, 09:07 AM   #11
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Tread separation? My guess is it will be oval instead of round when you unmounted it. I had same thing on my last RV. Caught it while checking tires after another blew out.
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Old 05-21-2015, 09:10 AM   #12
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That tire is shot. Looks like some kind of tread separation. I would NOT use that tire!!! Unless you want to replace a blowout on the road and repair your TT's bodywork.

Just my opinion though.
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Old 05-21-2015, 09:18 AM   #13
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You have exactly the same issue as I had with the MaraBombs on my previous SOB (Montana). My MaraBombs would start out on a trip looking like the one on the right ... after about 50 miles they would swell up and start looking like the old Model T ballon tires as yours does on the left. The belts failed in mine I was told. After they sat over night, they would go back to looking semi normal. There has been issue after issue with MaraBombs on other forums on the heavier campers 12K+ yet the manufactureres continue to sell them on new units. Yours will start having little bumps here and there and a tread line that raises above the others if you keep running them ... I've seen this over and over on MaraBombs others in my camping group had. Even though it says GoodYear on the side of your tire ... they are made in China like all other ST (trailer) tires sold in the US and I mean ALL. Many of us have gone with LT tires (Michelin, Firestone, BF Goodrich) if your weight isn't over their capacity ... otherwise GoodYear G614's are about the only other safe option. G614's are pricey! You can sell your MAraBombs to farmers to get back some of your money ... they slap them on their farm trailers that seldom see high mph and loads in excess of 12K. GET RID OF THOSE TIRES!
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Old 05-21-2015, 12:38 PM   #14
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Why not take that tire to a Goodyear dealer? The Marathons have a 6 year warranty. They should replace it. I'm not arguing for or against using these tires on your rig, that's up to you. BTW the Maxxis ST tires I purchased earlier this year were made in Thailand.
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Old 05-21-2015, 12:41 PM   #15
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tire bigger

My guess from prior episodes with it is the larger tire needs immediate replacement and adjustment from goodyear. It is about to separate the tread from the tire carcus.
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Old 05-21-2015, 12:49 PM   #16
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That is a WTH question?!? Looks like 2 different tire profiles. The right one is a square profile and left a round profile. I just changed the tires on my truck and the new tires(different manufacture) look narrow and taller because of the profile, but are the same size as my old set.
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Old 05-21-2015, 12:59 PM   #17
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I had a tire do that on our class C a couple years ago.
They were the Michelin recalled tires.
I noticed it while on a trip at a fuel stop.
Tried to make it a few miles up the road to a tire shop but it blew before I got there.
I believe they called it tread separation.
Was covered under the tire warranty.
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Old 05-21-2015, 12:59 PM   #18
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This can happen when the steel belts in the tire break. Just replace it with the spare for now and get it replaced. If it's under warranty, I'd go that route
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Old 05-21-2015, 01:07 PM   #19
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Check the rim size. If one rim is wider that the other it would account for the squatty, wider tire profile.
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Old 05-21-2015, 01:39 PM   #20
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Quote:
Originally Posted by Jerry01 View Post
All 3 other tires look the same. This is the only overinflated looking tire. All 4 tire pressures are within 1 psi of each other. This must have just happened because the tread looks normal and wearing evenly. Jerry


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Looks like that rim may be more narrow than the other rim. Just an observation.
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