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Discussion Starter #1
I’m building a multi use trailer to haul my 4 runner and firewood. It’s going to be 18 ft with twin 7,000lb axles. My original plan was to run 235 85 16 truck tires since trailer tires suck. Then I started looking at 215 75 17.5’s and 235 75 17.5’s. I know the 17.5’s are way overkill for the trailer but blowing tires when hauling sucks. For the wood I will be on shitty forest service/ potholed mt roads and that’s my only concern with the 17.5’s, but they’re tough and should be able to handle the abuse. My buddy blew 2 235 85 16’s destroying one wheel in the process. Granted the tires were a few years old and the trailer was max’d out for the tire capacity. So what’s everyone’s thoughts? 235 85’s or something in a 17.5 flavor? Cost is far less of a concern than reliability. Thanks in advance for any advise. Btw I’ve never dealt with 17.5’s so I’m pretty ignorant about them other than they’re stiff and bounce when unloaded
 

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Goodyear endurance are suppose to be the cats meow for 16s.

215 17.5s suck, nut up and go 235. You have continental, and all the other wang chung brands.
 

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I run 4400lb rated 14ply 235/85r16’s @ 100psi on all my trailers. I’d only spend the extra to move to a 17.5 to get a single wheel setup on a 10/12k axle otherwise the 16’s are a lot more available.
 

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I spent the day training on a train that used 245/70(?)R17.5, with 6k load rating each, I fell in love.
I should also say I run 19.5s on my dodge.
 

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Discussion Starter #6
I understand you can get 12 and 14 ply heavier rated 235 85 16’s and I’ve looked at that as well. It seems like 17.5 wheels are also much heavier duty. The when that we destroyed a couple weeks ago looked like a damn flower after 1/4 mile (we think) of potholed road after the tire went flat. It was dark, I was following, and it had air a short time before I noticed it was flat.
 

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If anything I would go to 19.5 since you can always find service truck takeoffs in 225\70r19.5 and they are as heavy as a 17.5 but easier to run across in case of stranded flat.
 

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The average take off 225/70r19.5 is only good for just under 4k lbs, the 235/75r17.5 or 245/70r17.5 are usually 6005lbs.

Boar has aluminum and steel 19.5” wheels for trailers though now, it’s a good mid level option.
 

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Discussion Starter #9
The average take off 225/70r19.5 is only good for just under 4k lbs, the 235/75r17.5 or 245/70r17.5 are usually 6005lbs.

Boar has aluminum and steel 19.5” wheels for trailers though now, it’s a good mid level option.
The weight rating of either is plenty I’m just trying to get a “tougher” tire...I know weight rating/tough kinda go hand in hand though. Trying not to be much over 32.5 tall in the tire dept though since I don’t want the trailer to be a skyscraper.
 

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We have them on our trailer. I don't know that there'sa better option but here'smy experience. First off our trailer is a heavy bitch. 22-24k lbs loaded. A lot of that gets transferred to the truck so I don't know what the tires are holding. We've had 4 blow outs in the past 50k miles. All full tread, in date tires. All on I40 between Little Rock and Nashville. That is a rough ass stretch of highway. It's difficult to get them in a roadside situation. We carry a spare and have never blown one while on the spare but it lingers in my mind. Our trailer is too heavy to limp on 3 tires. They're expensive as fuck. Typically $350'ish mounted, disposal and tax.
 

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I run them on my goose, and love them..

Back story was, I was rebuilding a trailer with 8K axles and had mismatched rags for tires. Originally it would have had 12.50-16.5's on it, which are $400+ each, and i didn't have rims for.. 235/85 truck tires weren't nearly heavy enough, and 235/85 14ply's are also spendy as hell...

I was in the process of piecing together a set of E rated 285/75-16's(3750lbs each), when I caught a craigslist ad for "5-215/75-17.5's on rims for $560"
After driving 5 hours to meet a guy at a gas station parking lot, they turned out to be 235/75-17.5's, all 5 brand new on new rims... for $560...:smokin: The story was he worked for a trailer shop and they had pallets of them, that he was reselling?? A co worker of mine later picked up 20 more off the same guy for the same price.. stolen? price fuck up? or really that cheap by the container load? who knows...


4 years later, so far so good. I love that they hold 6200lbs each @128psi, and have absolutely zero rolling resistance, even when loaded heavy. I also love how cool they run when loaded down...

The things I don't like, are the height, at 32" tall, its hard on suspension and brakes... and the price if i ever have to replace them
 
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