Seismic Westlake tires

[Loboclone]

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.


Note that the tires wear on the outside not the inside as normal axle misalignment. Broken belts

[House of Harview]

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.

[Firefighter78]

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.

[NC Hauler]

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

[House of Harview]

Originally Posted by NC Hauler

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.

[House of Harview]

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.

[Loboclone]

Originally Posted by NC Hauler

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.

[Loboclone]

Originally Posted by House of Harview

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.

[NC Hauler]

Originally Posted by House of Harview

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

[P25ct]

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.


Sent from my iPhone using Tapatalk

[NC Hauler]

I will replace my West(crap)Lake tires with Sailun S637 G rated tires..Same wheels because they're rated for 110 psi thus, no extra cost...excellent reputation for these tires and MORE than enough weight rating(4080# per tire) to cover the 7K axles.

[Loboclone]

Originally Posted by Loboclone

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.
Attachment 23490

Note that the tires wear on the outside not the inside as normal axle misalignment. Broken belts

Update from Westlake thru Jayco on this junk tire, no warranty claim honored and no replacement. What a surprise!

[Turtle Tim]

I want to replace the Westlakes on my 355w with Sailuns. My rims are rated for 110psi, but I only have 2" of clearance between the tires right now with the Westlakes. The diameter of the Sailuns are 1" bigger than the Westlakes, which would give me only 1" clearance between the tires.
Does anyone know what the minimum clearance required between the tires?

[House of Harview]

Originally Posted by Turtle Tim

I want to replace the Westlakes on my 355w with Sailuns. My rims are rated for 110psi, but I only have 2" of clearance between the tires right now with the Westlakes. The diameter of the Sailuns are 1" bigger than the Westlakes, which would give me only 1" clearance between the tires.
Does anyone know what the minimum clearance required between the tires?

Tim, I too have the issue of the axles being very close together. Not sure the TH specified in my signature are 2" like yours but, they sure look close however, if you have the 16" rims and want to upgrade to the G rated 235/85 R16 Sailuns, such may be an issue and I would unfortunately (cost wise) recommend going with the steel 17.5" 6.75" wide wheels with Sailun S637 215/75 R17.5 H rated tires here: $115.99 - S637 215/75R17.5 tires | Buy S637 tires at SimpleTire

This set up will not increase the circumference and even provide you with even more durability than the upgraded and G rated 16's. These 17.5's are to be blown up to 125 psi.

[Turtle Tim]

I would like to avoid having to get new rims if possible, especially since the ones I have are rated to 110psi.
I called Lippert today and they said the minimum spacing between the tires on all their axels is 1". I will have to do some more accurate measuring to see if I can stay within Lipperts minimum spacing.

[House of Harview]

Tim, The 1" spacing specified by Lippert is very good to know. As a matter of fact, to me, that's a game changer because I too cringe at the thought of having to eliminate the much better looking alloy wheels for those generic looking grey steel wheels. Looks like I too will be looking into those Sailun S637 ST235/85R16's load range G tires. The bummer is that I just purchased those fancy orange levelers that you roll onto with both wheels and such will make the rear wheel impossible due to the unit not fitting between the wheels however, even with stock wheels and tires, you may still have to trim it down to fit. The other bummer would be what I see as a big issue of possibly not being able to use the X-Chocks. Man, this stuff can be full of drama, eh?

[norty1]

Originally Posted by House of Harview

Tim, The 1" spacing specified by Lippert is very good to know. As a matter of fact, to me, that's a game changer because I too cringe at the thought of having to eliminate the much better looking alloy wheels for those generic looking grey steel wheels. Looks like I too will be looking into those Sailun S637 ST235/85R16's load range G tires. The bummer is that I just purchased those fancy orange levelers that you roll onto with both wheels and such will make the rear wheel impossible due to the unit not fitting between the wheels however, even with stock wheels and tires, you may still have to trim it down to fit. The other bummer would be what I see as a big issue of possibly not being able to use the X-Chocks. Man, this stuff can be full of drama, eh?

Good dependable tires will trump all that in the long run!

[House of Harview]

Originally Posted by norty1

Good dependable tires will trump all that in the long run!

Absolutely, Norty! My dilemma is not the fact of whether or not to upgrade the tires, it's whether to lose the extra inch or so between wheels due to how close the axles are on both Turtle Tim's and my TH units. With only having an inch between the two wheels and tires may force me to go with the 17.5" rims and the H rated Sailuns in order to at least maintain the factory spacing. Going with the 17.5's as opposed to the taller 16's will allow for the use of the X-Chocks and possibly even those two piece orange leveling units I referred to above. As specified, by going with the 17.5's I would also gain a load range from G to H.

[House of Harview]

I know we are beating this topic to death however, the drama continues in that I heard some 2017's have been fitted with Maxxis tires. If that's the case, I may decide to hold off for a couple years before upgrading and definitely upgrade if or when we do a trek up to Alaska. I would still cringe with those Maxxis' being only load range D however, I do have the TPMS system which should mitigate the issue somewhat. With my TH having a dry weight of nearly 9K lbs and with my JD diesel UTV at 1600 to 1700 lbs., the max. weight including water, propane and other stuff adds up pretty darn quickly and leaves very little room for beer. This is why I see 17.5's in my nery near future if not right away, know whadda mean?

[Turtle Tim]

Ok, I measured the spacing between the tires on my 355W, and it was slightly over 2 1/8". With the Sailuns being 9/10's of an inch more in diameter, that will give me over the 1" that Dexter requires. (I said Lippert in the post above, but the axels are actually Dexter and that is who I spoke with).
Ordered the Sailun's today from Simple Tire. Could not find them locally. America's Tire will mount, balance, and install for $80. Will feel better with a sturdier tire with extra load rating for some cushion.