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Wood River Pod View Drop Down
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Direct Link To This Post Topic: Tires
    Posted: 20 Jan 2019 at 9:21am
The Westlake 857+ tires that come on the HR's are 235 75 R15's.  They are ST tires not LT tires.  There is no like size replacement unless you go to a LT.  I have posted several times about my frustration trying to find a same size swap.  If I want to replace with ST tire I'd have to a 225 75 R15, which I'd lose about a 1-2ish in height.  Not a deal breaker since I added the risers, but I'd rather not. 

I couldn't find my old post on the topic.  Sorry.  Hope this helps.
Thanks
Jeff

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GlueGuy View Drop Down
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Direct Link To This Post Posted: 20 Jan 2019 at 11:20am
+1 to what Wood River Pod said.

The tires that came on our HRE RP-179 are Westlake CR857+ tires. The size stamped on the sidewall is "ST235-75R15", and they are also labeled "For Trailer use Only". They are plainly trailer tires.

They are a special tire (presumably) ordered by Forrest River for (at least) the HRE R-pods, and probably others as well. There is no after market equivalent, and they are also special because even though they are load range C, they are stamped with a maximum load of 2340 lbs, which is way above what a "typical" load range C tire would handle.

If you were to replace these tires, the closest I have found is ST225-75R15. You would want to get load range D in this tire size in order to get a similar/equivalent load handling capability.

The difference in height is only 3/4 of a centimeter (235 mm - 225 mm = 10 mm = 1 cm). And since it is a "75" profile, the height is .75 of the width, or 7.5 mm. This translates to about .295 inches or a little less than 1/3" (or a little more than 1/4" if you prefer) difference in height.

bp
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Direct Link To This Post Posted: 20 Jan 2019 at 1:16pm
Here you go, CR857+ tires.  

You can get them as Goodrides, Westlakes, Linglongs, Chengshans, or Triangles. $30-$50 each but you have to buy at least 100 pcs. Bet if you buy enough of them you can get them labelled as ST's or anything else you wantLOL.

https://rodeotyre.en.made-in-china.com/product/QBvnrzTJadcS/China-Radial-Winter-4X4-Tire-Goodrice-Westlake-Cr857-.html
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GlueGuy View Drop Down
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Direct Link To This Post Posted: 20 Jan 2019 at 2:01pm
Those are all labeled LT, but if you can order them in bulk, maybe you can change that too. The LT235/75R15 is load rated at only 900kg, which is quite a bit lower than the ones on our RP-179. 

Who knows, maybe all the specifications and sidewall marks are written in chalk?
bp
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Direct Link To This Post Posted: 20 Jan 2019 at 3:22pm
Maybe invisible ink. Nothing would surprise me...


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Wood River Pod View Drop Down
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Direct Link To This Post Posted: 20 Jan 2019 at 4:35pm
Glue guy, thanks for your math.  I thought I would sacrifice more clearance going to the 225's.  Based on your calc, I'd lose less than an inch. Good to know.  Thanks

I once scoured the internet and found a Westlake dealer in Canada that sold the exact replacement for the stock HR tires...but I wanted to find a replacement with a higher load rating, not the exact replacement.  Oh well.  Sounds like when I want the Westlakes gone, I'll move down to the 225's. 
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michaeln View Drop Down
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Direct Link To This Post Posted: 20 Jan 2019 at 6:47pm
I think the stiffer sidewalls of the LRE Goodyear Endurance compared to the stock soft junky HRE tires might actually result in MORE ride height, especially if they are aired up to 70-80psi.

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Direct Link To This Post Posted: 20 Jan 2019 at 6:52pm
That would be another advantage of the load range D tire; the higher operating pressure. Load range C only goes to 50 PSI, and that means more sidewall deflection regardless of the load rating.
bp
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Direct Link To This Post Posted: 20 Jan 2019 at 6:59pm
  On our Vibe we have new Goodyear Endurance tires 225/75/R15 trailer tires load range D 80 psi.
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Direct Link To This Post Posted: 20 Jan 2019 at 6:59pm
The ST225/75R15s I have are load range E.  I believe the 14" version is load range D.

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