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Old 08-07-2015, 02:25 PM   #11
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Although they are harder to find, I have learned that ST185/80R13 LRD tires are rated for 1710# each, or 3420 for two. If I mount those, I can get the added security of increased rating without notable increase in overall dimension. The wheel well clearance should not be affected, and the TT will not ride any higher. Success!!!
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Old 08-08-2015, 09:41 AM   #12
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Mods vs. warranty

I forget the specifics, but I did pretty much the exact same thing with a Fleetwood high wall popup we used to own. The secondary reason was that the tires that were on it were a hard to find size, so I changed it up to a larger rim size, only increasing the diameter by 1" overall, but gaining a lot of spare (peace of mind) capacity at a lower pressure.

I moved the spring down to the lower shackle mount hole to give some additional vertical clearance, but there was plenty of clearance front, back and sides.
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Old 08-12-2015, 10:49 PM   #13
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I just got my new SLX 145RB, and I already have ideas for many mods. By the way, I have reviewed all of the threads in the Jayco Mods forum and added to my to-do list. First, my wife has difficulty climbing into our trailer, so I intend to replace the single step with a twin step. Second, I want to separate the under bench storage into one section for inside access and another for outside access only. Third, I would replace the thin plywood under the seat cushions with thicker plywood, then reuse the thin wood to line the storage area(s) against shifting cargo. An extra AC outlet and a dedicated USB charger outlet would be nice. I really want to install a tub surround before water ruins the exposed wall panels. And what is in the wasted space under the furnace? My question is: How much of this would void my 2-year warranty?
Well, I tried the twin step, but she actually preferred a simple step stool instead, saving me $100. I have divided the under bench storage and started lining the storage area. The additional AC outlet is also done, still GFCI protected. I just bought a Vortex fan to put in the bathroom ceiling vent. My fun has begun!
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Old 08-14-2015, 11:16 PM   #14
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The plywood under the seats is now 3/8" rather than 1/8", and screwed down except for the door to the inside storage section. In the bathroom are two Command hooks for towels and two wire shelves to hold things. The shower is recaulked with silicone.
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Old 08-16-2015, 11:30 AM   #15
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Vortex fan is installed in the bathroom vent. Got 12 volt power from a nearby ceiling light. Works great!
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Old 08-19-2015, 10:57 PM   #16
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I also strengthened the benches and the support that holds the table to convert the dinette into a bed. It creaked a lot when we slept on our initial outing.
The sheets and blanket are made up on a 3" memory foam pad that we lay over the dinette cushions. Quite comfortable. Then when not in use, the foam pad with bedding is folded in fours and just fits into that mini-closet in my SLX 145RB. The pillows hide on the closet shelf above. Out of sight during the day and ready to use again on the next night.
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Old 08-20-2015, 08:42 AM   #17
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Originally Posted by Homersimpson View Post
Although they are harder to find, I have learned that ST185/80R13 LRD tires are rated for 1710# each, or 3420 for two. If I mount those, I can get the added security of increased rating without notable increase in overall dimension. The wheel well clearance should not be affected, and the TT will not ride any higher. Success!!!
Glad you found a solution that you can live with. I will say that I've had two trailers over 13 seasons that had/have 13" tires. I've towed one of those trailers on a 6k mile, and a 3k mile trip on the same tires over the first 6 years we had it. Unless you are over loading or leaving your tires underinflated you shouldn't have any problems.
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Old 08-21-2015, 12:57 AM   #18
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Thanks, Doc. I will watch the pressures closely. The load range C tires have max rating at 50 psi, while the load range D tires max out at 65 psi. Underinflated tires generate excessive heat resulting in tire failure.
I will be okay with the 13" wheels. I really was less worried about the size than I was about the tire rating being 230# less than the GVWR. And I am sure that none of my mods so far have actually overloaded anything.
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Old 09-01-2015, 06:43 PM   #19
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It occurred to me that part of the assumption here is that some of the weight is on the hitch so who the whole vehicle and cargo weight are not completely on the axles.
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Old 09-01-2015, 08:46 PM   #20
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Yes, that was the Jayco explanation I saw in an older thread. But some tire companies recommend getting tires with capacity that is 10%greater than GVWR, not 10%less. And I would prefer the added safety factor, regardless of what tires came standard on the TT.
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