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Old 04-23-2016, 10:46 AM   #1
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Seismic Westlake tires

If you have a Seismic with Westlake tires beware of this issue. I just had the axle's checked for alignment. They were not the issue, here is a pic of the second tire that took a dump.
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Note that the tires wear on the outside not the inside as normal axle misalignment. Broken belts
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Old 04-23-2016, 07:14 PM   #2
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Wow! My first thought was whether or not the axles were properly in line. Is your unit still under the 2 year warranty? Have you considered the 17.5 tire and wheel upgrade? I may go with the 17.5 Sailuns and steel wheel upgrade once the originals wear out but, it sure would be nice to pull the originals off upon pick up in Middlebury in a month or so so I can sell them as new with the nice aluminum rims in order to take some of the financial bite out of the 17.5 upgrade, know whadda mean? Please let us know how you rectify your issue if possible. As a matter of fact, if anyone would like the new set including new spare off my new TH, let me know. I will be heading back west to California after a visit with the family in Detroit so a meet and drop may be possible off one of the interstates while heading west.
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Old 04-23-2016, 07:54 PM   #3
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The first thing that comes to mind is Westlake tires are Chinese which is cheap and is unfortunate they are on your rig. Before we throw Chinese tire totally under the bus just check the run out of the rim and everything with the wheel bearings is correct. The tire in your photo looks to be an alignment problem, bent axle or bearing issue. However knowing there is Chinese junk tires on it, would strongly consider replacing them with Maxxis or Goodyear Marathons. I seen a fifth wheel this week laying along RT95 in South Carolina with passenger side destroyed from tire failure. There definitely needs some oversight in the quality of tires being imported here to the US. Both of the tires I recommend are imported but are proven and know from personal experience that they hold up to the task.
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Old 04-23-2016, 08:34 PM   #4
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I would recommend going with the SailunS637 16" G rated tires...you don't need the 17.5" tires and wheels...these tires manufactured by Sailun, is ISO 16949 certified..speaks highly of their quality. I wouldn't run the GY Marathons, but would look at G614 16" G rated GY tires..quite expensive, but a good tire, though I would go with the Sailun G614 tires.


Jim
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Old 04-23-2016, 11:30 PM   #5
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Originally Posted by NC Hauler View Post
I would recommend going with the SailunS637 16" G rated tires...you don't need the 17.5" tires and wheels...these tires manufactured by Sailun, is ISO 16949 certified..speaks highly of their quality. I wouldn't run the GY Marathons, but would look at G614 16" G rated GY tires..quite expensive, but a good tire, though I would go with the Sailun G614 tires.


Jim
Jim, I too was thinking about the 16" tires however, if I'm not mistaken, those Sailun S637 and the GY G614 16" G rated tires are LT235/85R16 change the diameter by an inch or so and may not fit. I know I read this somewhere here on this venue but, I don't recall the actual dimensions. IIRC, the 17.5 are very close to the originals regarding diameter. Another factor may be the pressure limit on the stock wheels which may be at 80 psi and I think the Sailun S637 16's are at 110 psi which would mean the rims would need replacing anyway if those were the choice.
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Old 04-23-2016, 11:42 PM   #6
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I just copied and pasted the following from the TDR (Turbo Diesel Register) forum.

"FYI, the 215/75R-17.5" tires are about 1" SMALLER in diameter than the LT235/85R-16 tires, so they will fit anywhere the 16" tires fit."

The Sailun S637 are 215/75R-17.5 H rated and blow up to 120 psi.
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Old 04-24-2016, 02:08 PM   #7
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Quote:
Originally Posted by NC Hauler View Post
I would recommend going with the SailunS637 16" G rated tires...you don't need the 17.5" tires and wheels...these tires manufactured by Sailun, is ISO 16949 certified..speaks highly of their quality. I wouldn't run the GY Marathons, but would look at G614 16" G rated GY tires..quite expensive, but a good tire, though I would go with the Sailun G614 tires.


Jim
Prior to the second tire taking a dump I had ordered 2 Sailun S637's. As for the PSI issue, I am going to roll the dice. This seismic has had so many issues I am not going to replace wheels at this point. I just put $2700 worth of solar on this rig this month.

On another note, there is no reason for the brain trust at Jayco to ever build a Toy hauler with 3 axles! StarCraft just announced they will build a Toy Hauler with similar floor plans and dry weight with tandem axles. 4 tires and wheels is better than 6.
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2015 Jayco Sesimic 4212 Extreme Weather Package, Dual Pane Windows, Side and rear Patios, 480 watt Zamp Solar Pkg 6 AGM batteries, Residential Fridge, custom Dishwasher, 5500 watt Onan and lot of problems.
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Old 04-24-2016, 02:14 PM   #8
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Quote:
Originally Posted by House of Harview View Post
Wow! My first thought was whether or not the axles were properly in line. Is your unit still under the 2 year warranty? Have you considered the 17.5 tire and wheel upgrade? I may go with the 17.5 Sailuns and steel wheel upgrade once the originals wear out but, it sure would be nice to pull the originals off upon pick up in Middlebury in a month or so so I can sell them as new with the nice aluminum rims in order to take some of the financial bite out of the 17.5 upgrade, know whadda mean? Please let us know how you rectify your issue if possible. As a matter of fact, if anyone would like the new set including new spare off my new TH, let me know. I will be heading back west to California after a visit with the family in Detroit so a meet and drop may be possible off one of the interstates while heading west.
This seismic is 11 month old, under warranty. I came to a realization recently why Jayco does a 2 year warranty! We have had warranty parts on order since Feb 18th and still no parts. Last fall the unit was out of service for 7.5 weeks waiting on parts. The problem is simple they are building so many RV s now they can't support the ones they have built.
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2014 Oreion Sand Reeper 4x4 Toy steel everywhere, street legal and licensed, 5 speed manual, 3 cylinder DOHC "Chery" engine and 2 door fun.
2015 Jayco Sesimic 4212 Extreme Weather Package, Dual Pane Windows, Side and rear Patios, 480 watt Zamp Solar Pkg 6 AGM batteries, Residential Fridge, custom Dishwasher, 5500 watt Onan and lot of problems.
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Old 04-24-2016, 03:17 PM   #9
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Originally Posted by House of Harview View Post
Jim, I too was thinking about the 16" tires however, if I'm not mistaken, those Sailun S637 and the GY G614 16" G rated tires are LT235/85R16 change the diameter by an inch or so and may not fit. I know I read this somewhere here on this venue but, I don't recall the actual dimensions. IIRC, the 17.5 are very close to the originals regarding diameter. Another factor may be the pressure limit on the stock wheels which may be at 80 psi and I think the Sailun S637 16's are at 110 psi which would mean the rims would need replacing anyway if those were the choice.

The Sailun S637 16" G rated tire will fit the wheels on my 2016 Seismic , so I'd think they'd work on a 15' also..The wheels on the Seismic are rated for 110 psi per Jayco...So the G rated Sailuns would be set up for 110 psi max sidewall pressure should one want to fill to that...If the 17.5" will fit, guess one could air to 110 psi and have more than enough carrying capacity...but trailer would set 1/2" lower?


The Sailun S637 is 1" in diameter bigger (1/2" taller) than a G614 tire..Need to check spacing between tires to make sure you have enough space between a larger diameter tire if going with the Sailun S637..The more expensive G614 would also work...I don't want to use a smaller diameter tire if possible.

Jim
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Old 04-25-2016, 10:34 AM   #10
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Went with 17.5 rims with 7 GY H114s on the 2016. Yes big investment but to think what it might mitigate from happening, it's money worth spending. Also had all 6 hubs checked out prior to beginning the season this year and the alignment checked. Again $$ out of pocket but still money toward mitigating the risk to an acceptable level.


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