285/75s vs 315/70s vs 35s....17" tires the great debate

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hodge-xj

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Your wheels are 17x7 or 17x8 ?
According to this https://tiresize.com/wheel-offset-calculator/
the 17x7 +24 will be more or less 5" backspace, while 17x8 +18 will be more or less 5.25", fairly similar, the Rebel wheel will be slightly closer to the fenders by a smidge.
17x7 as far as the searching I've done. So with 1.5 spacers I'll be about 3.5" backspacing. I may have to trim the lower bits on my fenders like a normal trim to fit job, but that's ok, if I didn't have to commute so far I'd be goin to a 1.5 zone lift and 37s. But that's for when I get a hoopty beater car.

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Correct. You won't have any issues with 315's and the lift you have in your truck at the moment. you could even leave the rear liners in there as is just minor rubbing. I removed them cause i'm OCD about my shocks and i wanted to see how much shaft is visible when the suspension cycles, i'm not kidding when i said busting 5100 stems marked me for life :)
I'll have to shake it down and see how much it kisses. For now I'll leave them as we've had such a wet year that mud is unavoidable and I will rarely be fully stuffed anyway. My 285s are super close to rubbing the inner portions of the arch with the sidewalls anyway, but it's only plastic so I'll let that self clearance.

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I'll have to shake it down and see how much it kisses. For now I'll leave them as we've had such a wet year that mud is unavoidable and I will rarely be fully stuffed anyway. My 285s are super close to rubbing the inner portions of the arch with the sidewalls anyway, but it's only plastic so I'll let that self clearance.

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It'll rub only when one wheel tucks up in full as the tire angles up towards the liner while the opposite gets extended
This was on stock rear springs and Faken AT3W 315/70/17

43679322554_ff8b275aba_h.jpgUntitled by RAM RSM, on Flickr

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hodge-xj

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Stuffed like a thanksgiving Turkey! Yea, I can live with minimal rub at that extreme. I highly doubt I'll be that crossed up very much. A little kiss here and there never really hurts anything.

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hodge-xj

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So, honest to god this debate is bothering the hell out of me. Strictly because my wants and my needs don't align, and I told myself I wouldn't let this build snowball like I've done to all my other. That's the thing. Not necessarily a fitment thing I guess. Our pics in the other threads are proof that we get a little crazy with builds. This is the wrong platform for that. I want the 315s, but know 285/75s also check all the boxes aside from a lot of choices. So it's a toss up, still. I don't foresee tire size being my limiting factor of any of the trails I'll run, that's for sure. I'm not squeezing this fat pig down jeep trails following a guy on 37s. Those days are over.

Since you had the stock 20s and essentially 33s, than jumped to 315s how's the mannerism of the truck it's self. Not particularly the tires, but how does the truck respond. You have some of the heavier tires on the market so if anyone would notice a drivability difference, you would. And you're more in tune with what you are feeling than some peeps per se.



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ram1500rsm

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Lol, i can still bark them from a dead stop if i put the pedal to the metal, is it exactly like stock ? No, but i can't complaint.
Now after re-reading your wheel specs and looking at your concern objectively, and even if you find a shop that will mount 315/70/17 in your 17x7 wheels, your tires might wear down a little weird. i've been in similar shoes but with 305/70/17's and 17x7 wheels.
Your more logical options are either 295/70/17 or 285/75/17
295/70/17 will have more tire options, the difference is minimal, and just FYI, the Patagonias in 295/70/17 are $146 each from discounttires right now... lol, they'll look good spaced out with those 1.5" wheel spacers you have.

upload_2019-3-6_19-43-25.png

$212 in 315/70/17
$233 in 37x12.5x17
I'm so tempted to run freaking 37's right now for that price is not even funny. freaking forum will ruin me.... hahaha
 
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Lol, i can still bark them from a dead stop if i put the pedal to the metal, is it exactly like stock ? No, but i can't complaint.
Now after re-reading your wheel specs and looking at your concern objectively, and even if you find a shop that will mount 315/70/17 in your 17x7 wheels, your tires might wear down a little weird. i've been in similar shoes but with 305/70/17's and 17x7 wheels.
Your more logical options are either 295/70/17 or 285/75/17
295/70/17 will have more tire options, the difference is minimal, and just FYI, the Patagonias in 295/70/17 are $146 each from discounttires right now... lol, they'll look good spaced out with those 1.5" wheel spacers you have.

View attachment 157881

$212 in 315/70/17
$233 in 37x12.5x17
I'm so tempted to run freaking 37's right now for that price is not even funny. freaking forum will ruin me.... hahaha
That was another thought i totally overlooked and didn't even think of. I'm sure id have a hard time getting the wear pattern right without the tpms goin nuts and having to run lower than ideal pressure. I really feel like I have what I call "inch-itis" where I want the biggest I can. That's all. But I for sure don't want to be getting new wheels, at least not yet.

I have to look at 295s. Never really consider them as I always thought they spec d out close to the 285s I have now.

My only other option is the kendas that are available in 35x10.5s, I can't remember where I found a spec sheet that verified they are 34.75" tall.

Hmmmm. I'm really considering these freaking milestars. Especially for the price you just posted.

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hodge-xj

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Btw, just checked and They are 200$? Each when I checked on the website. Wtf

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But if i check with the Normal Discount site with my zip code, it shows $146
Maybe print this out and ask in one of your local Americas Tire stores and see if they honor the price, this is fraking deal right there

upload_2019-3-7_10-14-13.png
 
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But if i check with the Normal Discount site with my zip code, it shows $146
Maybe print this out and ask in one of your local Americas Tire stores and see if they honor the price, this is fraking deal right there

View attachment 157931
I will, if that's the price I'll buy them freaking today. Gotta find a local store

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4wheel parts is running a sale, 100 off **** cepek sales, plus 150 rebate. That puts me at roughly 650$ for a set of 4. Looking at their new Exp's. Now, the question is 295s or 315s. Their 295s spec out at 33.6 inches which is big, and my worn fun countries are in fact close to spec size worn out so I think they run true to size.

The price is so damn close it's a pretty big toss up. Do I get greedy and try for the extra 1"........both are sitting in my basket waiting for the go button to be pressed

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After being in similar shoes I'll error out on the big ones based on looks.On the logical side I'll do 295's. Gearing will move both but be better on 295's, no metal cutting to run the 315's, mpg will be a tad better on 295's.
 
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After getting these spacers on im looking really hard at the kenda klevers in 35x10.5. Narrow enough for my stock rim, keep the tires flush with fenders, 35s, and may not rub. Now if could only find info on these things

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Don't want to hijack this thread, but this discussion is close to what I'm dealing with too. I have factory 20s and the OE Goodyear slicks. I am going down to a 17" rim, with a 0 offset. I'm wondering if you can fit 285/75/17 on stock suspension? They call it a 34" tire, but its actually a 33.8x11.2 tire. If so the best deal from my discount tire is the new AT# XLT which isn't too heavy and looks great. If not, I'll go with 285/70/17. These should fit as they are a touch shorter, and a touch wider than the stock 27/60/20s from the factory. Then the question is E rated tire or not? Falken AT3W in standard load are way less money than the other tires I'm considering that are E rated (AT3XLTs, and Wrangler Ultraterrains). Any thoughts? I have the Semi with 3.92s. TIA
 
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Don't want to hijack this thread, but this discussion is close to what I'm dealing with too. I have factory 20s and the OE Goodyear slicks. I am going down to a 17" rim, with a 0 offset. I'm wondering if you can fit 285/75/17 on stock suspension? They call it a 34" tire, but its actually a 33.8x11.2 tire. If so the best deal from my discount tire is the new AT# XLT which isn't too heavy and looks great. If not, I'll go with 285/70/17. These should fit as they are a touch shorter, and a touch wider than the stock 27/60/20s from the factory. Then the question is E rated tire or not? Falken AT3W in standard load are way less money than the other tires I'm considering that are E rated (AT3XLTs, and Wrangler Ultraterrains). Any thoughts? I have the Semi with 3.92s. TIA
I have a smaller level at around 2.3" and I'm running 315s on stock 17" wheels and 1.5 bora spacers. I had a SLIGHT and I mean smallest touching when flexed at about full turn on the drivers side against the wheel liner. I heated it and pushed it flat and have clearance for days. With a 285 series tire and 0 offset you should have no issues at all as I'm running a 30mm wider tire at roughly -12 offset. A few guys have run them on stock wheel at stock height with no issues, so with a 0 offset you should be just fine. If it does rub the liners it's as easy as stealing a blow drier or getting a heat gun and warming the liners enough to mold them a bit. No metal cutting or serious trimming required.

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I have a smaller level at around 2.3" and I'm running 315s on stock 17" wheels and 1.5 bora spacers. I had a SLIGHT and I mean smallest touching when flexed at about full turn on the drivers side against the wheel liner. I heated it and pushed it flat and have clearance for days. With a 285 series tire and 0 offset you should have no issues at all as I'm running a 30mm wider tire at roughly -12 offset. A few guys have run them on stock wheel at stock height with no issues, so with a 0 offset you should be just fine. If it does rub the liners it's as easy as stealing a blow drier or getting a heat gun and warming the liners enough to mold them a bit. No metal cutting or serious trimming required.

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Awesome to hear. Thanks for the insight on this! If all I have to do is mold the liner than I think I'll have no issues doing that. I'll also probably add some Fox coil overs at some point and that should eliminate the question entirely.
 
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Awesome to hear. Thanks for the insight on this! If all I have to do is mold the liner than I think I'll have no issues doing that. I'll also probably add some Fox coil overs at some point and that should eliminate the question entirely.
Contact nick@gotexhaust he's the hook you need for all things suspension and accessories. Depending on your budget and wants/needs he can get you sorted out right.

Guys fit 37s on just a level so these tires are a non issue and you're looking to run a normal offset. Don't overthink it.

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@ram1500rsm sooooo what kinda weird wear were you getting on your 305s. I have air pressures down to 40, have a nice contact patch but man I'm tearing up the outer lugs on these tires something fierce. Might drop to the 285 75s soon since I'd rather spend money on a bumper and **** than wheels. [emoji41]

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@ram1500rsm sooooo what kinda weird wear were you getting on your 305s. I have air pressures down to 40, have a nice contact patch but man I'm tearing up the outer lugs on these tires something fierce. Might drop to the 285 75s soon since I'd rather spend money on a bumper and **** than wheels. [emoji41]

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You mean 315's ??, My Falken AT3W are wearing down like Iron at 1/32 every 5k miles so far. Sometimes i wish they will wear down faster so i can try something else :) I run the tires at 36 psi and wear is even across all 5 tires. If your outer lugs are wearing down faster you have too much toe-in or too much + camber or both, though i recall you had used tires so perhaps the previous owner had them that way already and they're just dying quicker following the same path.

I'm keeping a log of the tires here: https://www.ramforum.com/threads/falken-at3w-315-70-17-e-rated-my-review.129308/
 
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