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Old 03-03-2016, 02:25 PM
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Tires tires tires..

Question to the masses..

Will be installing a 3" zone lift with superlift replacement control arms & rubicon express steering stablizer. Still have stock gears and no posi in my 2013 JKU Freedom. Also have DC gunmetal grey 17" rims replacements.

My goal is to get 34" in the wheel wells (as 35" i know i have to change my gears out). Im building a dual purpose rig (primary street) and im kinda needing direction on what kind of street/trail tires i should consider. The ones I have listed priced near each other (with in say 25 bucks a tire).

The 4 i've been looking at are as follows:

315/70/17 Micky Thompson STZ's
315/70/17 Cooper Discovers ST Maxx
305/70/17 Toyo Open Country A/T II
295/70/17 Toyo Open Country R/T

i know the 315 equates to about 34.4, the 305 is about 39.8/9 and the 295 are 33.5. What tire should i consider (and also welcome to other brands as well)? I personally want to go with the 315's but if that going to cause problems with my gearing its not worth the $$$.

Thanks for any insight
Rob

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Old 03-03-2016, 02:27 PM   #2
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What type of terrain are you looking at? Makes a big difference. From what you've listed. not a lot of mud I take it?

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Old 03-03-2016, 02:33 PM   #3
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I went with 315 Duratracs because of weight. Once you go over 85 pounds then you have to buy a spare tire solution too. (overload the factory spare carrier)
I believe all the tires you listed will put you over 85 pounds when a wheel is added to the tire weight.
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Old 03-03-2016, 02:34 PM
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Sorry forgot to mention that. No major mud bogging. General offroad trails no major rock crawling. However want tires that can help me threw those situations in its on a trail im taking.
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Old 03-03-2016, 02:38 PM
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how are duratrac? i know Goodyear doesn't have a great reputation for making off road tires in the past. I have stock Goodyear wranglers now and its have been a fairly good tire with pretty even tread ware (works much better then i have them at 40lbs then the 35 Jeep recommends)
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Old 03-03-2016, 02:43 PM   #6
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how are duratrac? i know Goodyear doesn't have a great reputation for making off road tires in the past. I have stock Goodyear wranglers now and its have been a fairly good tire with pretty even tread ware (works much better then i have them at 40lbs then the 35 Jeep recommends)
Countless threads on this forum that sing their praises.

I have open Country MTs on mine and the weight is a killer. Went with the Duratracs on the wife's because of how light they are.Have not had a chance to get them off road yet. Most run them around 28 pounds.

Good luck!
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Old 03-03-2016, 03:57 PM   #7
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I run MasterCraft Courser MXTs... doesn't sound like it's up your alley. Phenomenal tire though. Love it's performance so far
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Old 03-03-2016, 04:28 PM   #8
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What gears do you have? I am running 35" BGF KO2's, that run about 34.5" with factory 4.10's. No issues at all. If I had a true 35", there would be no issues there either.
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Old 03-03-2016, 09:01 PM   #9
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Cooper. Love mine. Good road manners, not loud, I personally like the way they look. In my opinion really good off road, maybe I'm easily pleased but I like em!
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Old 03-04-2016, 02:50 AM   #10
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315s are 35s. It is just the metric sizing. 315s and 35s generally measure 33.5-34.5 once under the vehicle. If you feel a 35 requires a regear the same would be true for a 315. There is no difference.
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Old 03-04-2016, 05:49 AM   #11
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Duratracs are a good choice. They are a bit more aggressive than a regular AT.
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Old 03-04-2016, 06:43 AM   #12
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Had duratracs.... good but expensive..... had nittos...wore out fast......had Hankooks... kinda rough... now have Kelley Safari TSRs.... outstanding tire! Probably, the best unknown AT out there.
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Old 03-04-2016, 06:44 AM   #13
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What gearing do you have?
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Old 03-04-2016, 08:02 AM   #14
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Had duratracs.... good but expensive..... had nittos...wore out fast......had Hankooks... kinda rough... now have Kelley Safari TSRs.... outstanding tire! Probably, the best unknown AT out there.
Your Nittos wore out fast? I'm getting lots of mileage out of mine.
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Old 03-04-2016, 08:17 AM
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Guys... for the question about gears.. im running stock 3.21 no posi.

As for 315's on the Coopers and Micky's their specs state the size is about 34.3 and 34.2 inch
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Old 03-04-2016, 08:19 AM
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Had duratracs.... good but expensive..... had nittos...wore out fast......had Hankooks... kinda rough... now have Kelley Safari TSRs.... outstanding tire! Probably, the best unknown AT out there.
Those Kellys how long have u rode on them.. any excessive noise or uneven tread wear??
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Old 03-04-2016, 08:22 AM   #17
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Guys... for the question about gears.. im running stock 3.21 no posi.

As for 315's on the Coopers and Micky's their specs state the size is about 34.3 and 34.2 inch
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315s are 35s. It is just the metric sizing. 315s and 35s generally measure 33.5-34.5 once under the vehicle. If you feel a 35 requires a regear the same would be true for a 315. There is no difference.
That's what they come to under load (vehicle weight). Like Carlton said, it's a 35" tire. It just doesn't measure out to be a 35 under the vehicle load.
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Old 03-04-2016, 08:24 AM
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315s are 35s. It is just the metric sizing. 315s and 35s generally measure 33.5-34.5 once under the vehicle. If you feel a 35 requires a regear the same would be true for a 315. There is no difference.
AHHH.... ok I had that kind of feeling about it. from most Jeep people I spoke to they kept telling me 35 on 3.21 gears will work but sucking down on gas, however When i brought up 315's no one had any real answer as either they used 33" or 35". So it DOES appear 295 or 305 would be the better choice here.
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Old 03-04-2016, 08:27 AM   #19
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Your Nittos wore out fast? I'm getting lots of mileage out of mine.
Not getting great mileage out of mine either. Probably not quite half way worn in about 12k miles.
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Old 03-04-2016, 08:27 AM
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AHHH.... ok I had that kind of feeling about it. from most Jeep people I spoke to they kept telling me 35 on 3.21 gears will work but sucking down on gas, however When i brought up 315's no one had any real answer as either they used 33" or 35". So it DOES appear 295 or 305 would be the better choice here.

Grr Bad typing... the 295 would be the top size since it just hovers at the 33.5" compressed (or basically just get 33") LOL
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Old 03-04-2016, 08:32 AM   #21
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I'd encourage anyone with 3.21s to upgrade gears if they're upgrading tire size. 3.21 is Jeep's minimum gear set best fit for the 29" tire on a stock Sport. IMO anyone moving up to the 31-32" tires of any other model is best served with the 3.73 gear set.

So IMO get the tire size you want and plan a regear to go along with it. 4.56 is a great pairing to the 35"/315 tire!

^above opinion is for a JKU, JK opinion would vary slightly.
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Old 03-04-2016, 08:49 AM   #22
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AHHH.... ok I had that kind of feeling about it. from most Jeep people I spoke to they kept telling me 35 on 3.21 gears will work but sucking down on gas, however When i brought up 315's no one had any real answer as either they used 33" or 35". So it DOES appear 295 or 305 would be the better choice here.
Just to clarify for future reference, "315" doesn't have anything to do with the height of the tire. Sure, 99% of the 315's that we put on our Jeeps end up being around 35" because the aspect ratio and rim size all jive. But in the real world the 315 number has to do with the cross sectional width of the tires, not the height.

This is also a "315" tire:
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Old 03-04-2016, 08:55 AM
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I'd encourage anyone with 3.21s to upgrade gears if they're upgrading tire size. 3.21 is Jeep's minimum gear set best fit for the 29" tire on a stock Sport. IMO anyone moving up to the 31-32" tires of any other model is best served with the 3.73 gear set.

So IMO get the tire size you want and plan a regear to go along with it. 4.56 is a great pairing to the 35"/315 tire!

^above opinion is for a JKU, JK opinion would vary slightly.

Thanks for the insight... I just pulled up an gear ratio calculator and from what I can caliculate 33's is probably the largest tire I can go with with my stock gears. It approximates with the tire my overall gearing would be from 3.21 down to 3.12 to 1 (it recommends the gearing to be up to 3.30 to 1.

Guys thank you for all your help. Cant afford to regear my jeep right now but if i need anything larger than 33" (it seems) i really need to change out my gears at this point.
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Old 03-04-2016, 09:00 AM
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Just to clarify for future reference, "315" doesn't have anything to do with the height of the tire. Sure, 99% of the 315's that we put on our Jeeps end up being around 35" because the aspect ratio and rim size all jive. But in the real world the 315 number has to do with the cross sectional width of the tires, not the height.

This is also a "315" tire:

Do totally understand the 315 aspect. just the calculators to convert metric to imperial factors in all the dimensions of the tire... since there isnt a "imperial" 34" tire its all approximated.
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Old 03-04-2016, 09:51 AM   #25
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I did the zone 3 in and a fox stabilizer put 315/70/17 general grabber at2 on stock rims with back spacers I love the look and the ride the tires are super quiet on the road and great in sand and snow , didn't change gears and its fine the shift points changed a little and I'm averaging 15/16 mpg
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Old 03-04-2016, 05:26 PM
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I did the zone 3 in and a fox stabilizer put 315/70/17 general grabber at2 on stock rims with back spacers I love the look and the ride the tires are super quiet on the road and great in sand and snow , didn't change gears and its fine the shift points changed a little and I'm averaging 15/16 mpg
Nice setup you have.. so you een running 317/70 for how long curious??
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Old 03-05-2016, 09:28 AM   #27
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Not getting great mileage out of mine either. Probably not quite half way worn in about 12k miles.
You guys doing 5 tire rotations and proper PSI? I have zero issues with wear.
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Old 03-05-2016, 02:24 PM   #28
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Those Kellys how long have u rode on them.. any excessive noise or uneven tread wear??
4,000 miles....no problems.....normal noise....
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Old 03-06-2016, 06:34 PM   #29
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You guys doing 5 tire rotations and proper PSI? I have zero issues with wear.
Yup 5 tire rotation and PSI is good.
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Old 03-07-2016, 12:22 PM   #30
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I have very unusual wear on both front tires on my stock Rubicon mud terrains. It isn't the inside or outside of tires but right down the middle the lugs are wearing more on the back side then the front side of each lug. Terrible road noise now. Is this alignment issue or psi issue? Any help would be appreciated.
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