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Old 02-09-2013, 05:18 PM   #1
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Info please!! 315/75/16 E rated GY dura trac

Looking a a lighty used set of good year 315/75/16 dura trac's. This is a load rated "E" tire. Anyone running it?? Would it be way to stiff for my 2 door?? I also have 3.73 gears and a auto trans. These are about 34" tall. Any issue's with this?? I am also running a leveling kit, 2 in front and 1 in the back. Will that be enough??
Thanks for any input..

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Old 02-09-2013, 08:57 PM   #2
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Anyone???

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Old 02-09-2013, 08:59 PM   #3
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I run same setup but 15" wheels. Runs great.
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Old 02-09-2013, 09:07 PM   #4
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Looking a a lighty used set of good year 315/75/16 dura trac's. This is a load rated "E" tire. Anyone running it?? Would it be way to stiff for my 2 door?? I also have 3.73 gears and a auto trans. These are about 34" tall. Any issue's with this?? I am also running a leveling kit, 2 in front and 1 in the back. Will that be enough??
Thanks for any input..
I run that exact tire. Understand, anything I tell you is gonna be entirely subjective...

Tires that are E rated are harsh to drive on a Wrangler, plain and simple. However, I LIKE mine. I also like stiffer springs. I want my Jeep to feel like a truck. Some peeps do not.

I've got a '12 with 3.73 gears, and the tires have indeed lessened my performance, most noticeably on the highway while trying to pass in high gear, or going up hills.

It's a little easier for me, since I have a manual and can simply stay in 5th gear if I want. For an auto, you're gonna get more of a "hunt-and-peck" thing from your tranny.

Again, it's all subjective. You may have none of the issues I mentioned above...or you may find yourself in Jeep Hell.
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Old 02-09-2013, 09:08 PM   #5
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Oops, forgot...you should be fine with a leveling kit, though you might bang fenders if you disco off-road.
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Old 02-09-2013, 09:11 PM   #6
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Love your expertise kbwwolf. Very informative and correct all the time!
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Old 02-09-2013, 09:15 PM   #7
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@KB what PS I are you running? I have the c rated duratracs and I'm running 27, which is still high for the chalk test. Maybe I'm @ 24 now?? Can't remember what I set them to after Rausch.
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Old 02-09-2013, 11:09 PM   #8
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When I had the Duratracs, they actually rode quite well, smooth, compared to the other heavier M/T E class tires I've run. I ran them at 27-28psi with nice even wear. Since they are also somewhat lighter, then other tires their size, they actually got better fuel mileage.
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Old 02-09-2013, 11:47 PM   #9
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Love your expertise kbwwolf. Very informative and correct all the time!
Thank you sir. I don't know about all the time, though...very subjective biz, our Wranglers.

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@KB what PS I are you running? I have the c rated duratracs and I'm running 27, which is still high for the chalk test. Maybe I'm @ 24 now?? Can't remember what I set them to after Rausch.
I run 31 PSI in mine; lowered it from 32 after a chalk test in summer. But that's after a year of use; the lower pressure is probably due to wear. Also, a lot of your tire pressure's gonna be dependent on the weight of your mods, your lift, etc.

I don't give any thought at all to what it should be; I do the chalk test, and go by that. If you're getting full tread coverage and your Jeep feels good on the road, why fret?
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Old 02-11-2013, 07:50 AM   #10
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I have E's no issues.

Like was said....chalk test.
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Old 02-11-2013, 08:53 AM   #11
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Quote:
Originally Posted by smitty141 View Post
Looking a a lighty used set of good year 315/75/16 dura trac's. This is a load rated "E" tire. Anyone running it?? Would it be way to stiff for my 2 door?? I also have 3.73 gears and a auto trans. These are about 34" tall. Any issue's with this?? I am also running a leveling kit, 2 in front and 1 in the back. Will that be enough??
Thanks for any input..
i run this exact setup (trans, gears, tire size) on my 2 door JK. running right around 34 psi and they do great (wheeling and as a daily driver).. i average between 16.5 and 17.5 MPG pretty much all the time... far as your lift goes, you might run into some fender rub if you do a lot of wheeling, but you should be okay around town.
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Old 02-11-2013, 10:15 AM   #12
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I'd run those at 20-25 psi. Otherwise they'll be rough.

And I wonder how heavy those are compared to the 33x12.50-15 version? 10 lbs. more? 15?
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Old 02-11-2013, 10:45 AM   #13
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I'd run those at 20-25 psi. Otherwise they'll be rough.

And I wonder how heavy those are compared to the 33x12.50-15 version? 10 lbs. more? 15?
The 315/75R16s (E-rated) that I run are 64 lbs each.

Goodyear*Wrangler DuraTrac
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Old 02-11-2013, 11:28 AM   #14
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That's what I figured. 15 lbs. more per tire. Using the old rule of thumb, that's like hauling 600 lbs in your Jeep at all times. That's why I'll never do 16" wheels again.
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Old 02-11-2013, 07:28 PM   #15
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Quote:
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That's what I figured. 15 lbs. more per tire. Using the old rule of thumb, that's like hauling 600 lbs in your Jeep at all times. That's why I'll never do 16" wheels again.
Can you explain this rule of thumb more? Not super familiar with it.
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Old 02-11-2013, 07:38 PM   #16
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Can you explain this rule of thumb more? Not super familiar with it.
Yes I'm unfamiliar with this too, and unless you go to 15's, a 16' rim with 35's will be the lightest tire and rim combo
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Old 02-11-2013, 07:43 PM   #17
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That's what I figured. 15 lbs. more per tire. Using the old rule of thumb, that's like hauling 600 lbs in your Jeep at all times. That's why I'll never do 16" wheels again.
i don't believe that a 33" tire and 15" wheel are 50lbs... that's awfully light, i suppose its possible on some of the KOH rigs that are real weight nuts... but DDs, i'm skeptical.

a stock rubicon wheel and tire weigh around 72lbs if i'm not mistaken.... my 315/75 r16 goodyear duratracs and level 8 - ZXs where just under 78 pounds. that's like 5.5 lbs more per tire...

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Old 02-11-2013, 07:44 PM   #18
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I have the same tire setup and have no problem. I also run 31psi. I love this tire I also ran them on my TJ
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Old 02-11-2013, 09:16 PM   #19
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i don't believe that a 33" tire and 15" wheel are 50lbs...
49 lbs is just the tire.

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Old 02-11-2013, 09:20 PM   #20
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I run same setup but 15" wheels. Runs great.
35" Duratracs are not available for 15" wheels. You mean 33s.
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Old 02-11-2013, 09:24 PM   #21
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The 315/75R16s (E-rated) that I run are 64 lbs each.

Goodyear*Wrangler DuraTrac
The Duratrac sizes and weights discussed in this thread are:

33x12.5R15 = 49.10lbs
305/70/16 = 63.62lbs
315/75/16 = 66.21lbs

All of my tire spec information comes directly from the manufacturer not online or retail vendors. These are from Goodyear's tire and production spec list. Straight from the factory. Tirerack, onlinetires.com etc have had many tire weights incorrect for years without updating them. I was talking with Yokohama recently about this too. They've run into the same thing with the tire spec info in Quadratecs magazines.
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Old 02-11-2013, 09:30 PM   #22
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The Duratrac sizes and weights discussed in this thread are:

33x12.5R15 = 49.10lbs
305/70/16 = 63.62lbs
315/75/16 = 66.21lbs
And around 65 pounds for a 315/75/16 is pretty much the norm for an AT tire.


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Old 02-12-2013, 06:38 AM   #23
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Can you explain this rule of thumb more? Not super familiar with it.
The old rule of thumb is that every 10 lbs. of unsprung weight is equal to 100 lbs. of cargo weight.

So by adding 10 lbs. to your tires (which are "below" the suspension) you are effectively adding 100 lbs. to the weight of your Jeep in terms of MPG and performance.

So by going with 16" wheels, your only options are all "E" rated with a handful of "D" rated options. This is a HEAVY setup to run. Yes, it'll ride fine. But it'll kill your performance and mileage.

A much better way to go is to use 15" wheels so that you can get "C" rated tires that are actually made for Jeeps. OR... go on up to 17s so you can get "P" rated 285/70s.
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Old 02-15-2013, 03:39 AM   #24
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So by going with 16" wheels, your only options are all "E" rated with a handful of "D" rated options. This is a HEAVY setup to run. Yes, it'll ride fine. But it'll kill your performance and mileage.
I'm running 35" or 315/75/16 Goodyear Duratracs on my two door with stock 3.21 gears and a manual tranny. MPG is around 16-17 driving conservatively and performance is very livable. Its not a race car so I don't expect it to be in any way but running this set up has by no means killed anything. Its a comfortable ride, load range, and weight for a 35" tire. I've got no complaints.

A lot of info people hear on line is repeated over and over and tends to become what everything thinks is actually true about a certain lift, tire, or performance but it's not always this way. With these, I would say it's one of those that is just not true.
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Old 02-15-2013, 12:38 PM   #25
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I didn't run these but ran 33 MT/R's in E class with 37psi awhile back and I thought they ran great myself. Wouldn't think a AT with softer rubber tread would run any worse

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