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-   -   Duratrac "C" vs "E" rating (http://www.wranglerforum.com/f27/duratrac-c-vs-e-rating-168300.html)

Jakesdad 06-21-2012 01:35 AM

Duratrac "C" vs "E" rating
 
I've decided to go with Duratrac tires in 265/75/16. So I just order them up, right? Noooooooo :nonono:. We have to hurdle yet another obstacle of confusion. This tire has two different rating choices. A C1 and E1. What exactly do these mean?

Dew 06-21-2012 06:59 AM

Ply Rating. Unlike passenger car tires(P), LT(light truck) tires are rated alphabetically according to how much Ply its got. The E1 has a higher rating so it can tow more and can handle more load. But it puts a bigger dent in your wallet.

For moderate driving on and off road, I'd just go with the C rating.

MCDavis 06-21-2012 07:59 AM

The E rated tire will also give a harsher ride than the C rated tire. Due to how light our Jeeps are, the C rated tire is the better choice for ride quality.

WXman 06-21-2012 08:47 AM

On the Goodyear Duratrac/Authority the "C" rated tire has 2-ply sidewalls and the "E" rated tire has 3-ply sidewalls. That's a big deal for rock crawlers.

Personally, I'd do "C" rated. They have less load capacity than "P" tires but they should be fine. You're probably not going to tow much with a JK anyhow.

dhdad 06-21-2012 09:32 AM

Quote:

Originally Posted by WXman (Post 2497943)
On the Goodyear Duratrac/Authority the "C" rated tire has 2-ply sidewalls and the "E" rated tire has 3-ply sidewalls. That's a big deal for rock crawlers.

Personally, I'd do "C" rated. They have less load capacity than "P" tires but they should be fine. You're probably not going to tow much with a JK anyhow.

E rated tires are 10 ply, D are 8 ply and C are 6 ply. E rated tires are very tough, I have them on my 8000 lb Diesel 2500HD and still air them down 20-30 psi below max of 80psi when the truck is empty. They simply ride harsh. On a Jeep the vehicle is so light that you'd have to air an E rated below it's "minimum" rating and then you might get premature tire wear and it will still be harsher than a C or D at the same PSI. I've often contemplated putting D rated tires on my truck but I still haul too much at times, I would never put an E rated tire on anything less than a 2500HD or 250 Super Duty. D is still a bit much for a Jeep but the limited choice of C rated tires beyond the 32" stockers makes it next to impossible to go bigger unless you're running 15" wheels.

Chart on Plies: (note that this is comparable load rating to old bias Ply tires since most LT tires regardless of load rating have 2-3 plies these days. The number of plies in reality should not effect your decision but the load rating should):

Tire Tech Information - Load Range/Ply Rating Identification

Jakesdad 06-21-2012 10:58 AM

:banghead:
OK, then if I go with the C1 rated tire for the better ride will I still be able to tow the 3500 pound load that I could before?

dhdad 06-21-2012 12:21 PM

Quote:

Originally Posted by Jakesdad (Post 2498425)
:banghead:
OK, then if I go with the C1 rated tire for the better ride will I still be able to tow the 3500 pound load that I could before?

Absolutely, the stock Jeep comes with a C rated tire able to tow 3500 lbs. That's not a very high tow capacity. I towed a 6500 lb boat behind a GMC 1500 year's ago that was on C rated 265/75r16 tires, the engine was a little underpowered for it but the rest of the truck including the tires were fine. When you start towing over 7-8K lbs then the tire selection becomes much more important as you start to get into real heavy tongue weights.

WXman 06-21-2012 01:42 PM

Quote:

Originally Posted by dhdad (Post 2498698)
Absolutely, the stock Jeep comes with a C rated tire able to tow 3500 lbs. That's not a very high tow capacity. I towed a 6500 lb boat behind a GMC 1500 year's ago that was on C rated 265/75r16 tires, the engine was a little underpowered for it but the rest of the truck including the tires were fine. When you start towing over 7-8K lbs then the tire selection becomes much more important as you start to get into real heavy tongue weights.

Do they? Every Jeep I've ever seen has "P" rated tires...except the Rubicon.

To answer his question...yes, a "C" rated tire is fine. They are rated for less weight than a "P"...but they are still plenty heavy enough for a Jeep.

dhdad 06-21-2012 03:54 PM

Quote:

Originally Posted by WXman (Post 2498959)
Do they? Every Jeep I've ever seen has "P" rated tires...except the Rubicon.

To answer his question...yes, a "C" rated tire is fine. They are rated for less weight than a "P"...but they are still plenty heavy enough for a Jeep.

Sorry you are correct but even the Rubicon Unlimited, with C rated 32" tires, is rated to tow 3500 lbs.

WXman 06-21-2012 05:45 PM

Yeh the TJ Rubicons had "E" rated tires from the factory and they got lots of complaints so when the JK came out they switched to the BFG and a "C" rating. It's much better now.

Jakesdad 06-21-2012 06:46 PM

Thanks for all the replies, guys. It is going to be the C rated tires for me.:thumb:

DrHolliday 06-21-2012 07:06 PM

To the OP, run the C's unless you want a stronger side wall.

Quote:

Originally Posted by dhdad (Post 2498078)
E rated tires are 10 ply, D are 8 ply and C are 6 ply. E rated tires are very tough, I have them on my 8000 lb Diesel 2500HD and still air them down 20-30 psi below max of 80psi when the truck is empty. They simply ride harsh. On a Jeep the vehicle is so light that you'd have to air an E rated below it's "minimum" rating and then you might get premature tire wear and it will still be harsher than a C or D at the same PSI. I've often contemplated putting D rated tires on my truck but I still haul too much at times, I would never put an E rated tire on anything less than a 2500HD or 250 Super Duty. D is still a bit much for a Jeep but the limited choice of C rated tires beyond the 32" stockers makes it next to impossible to go bigger unless you're running 15" wheels.

Chart on Plies: (note that this is comparable load rating to old bias Ply tires since most LT tires regardless of load rating have 2-3 plies these days. The number of plies in reality should not effect your decision but the load rating should):

Tire Tech Information - Load Range/Ply Rating Identification

Just wanted to let you know I run a load range D on my 2500 diesel. In a 285/75R16 load range D the actual weight rating is higher then the stock 245/75R16 load range E tire. I've towed a lot and heavy, just make sure the actual weight rating on the tire at least matches OEM.

dhdad 06-22-2012 07:53 AM

Quote:

Originally Posted by DrHolliday (Post 2500074)
To the OP, run the C's unless you want a stronger side wall.



Just wanted to let you know I run a load range D on my 2500 diesel. In a 285/75R16 load range D the actual weight rating is higher then the stock 245/75R16 load range E tire. I've towed a lot and heavy, just make sure the actual weight rating on the tire at least matches OEM.

Yes the D rating in that size is higher than stock but not as high as my E rated 285/70r17 tires rated at 3750 each. I needed to go that high as I carry (not tow) a 4200 lb camper in the bed of my truck so the total weight on the rear axle is about 7300 lbs which would be well over the combination of your 2 D rated tires.

aypanthony 10-11-2012 09:43 AM

Hey All,

I wanted to resurrect this thread since I am in the market for a new set rims and tires. Here is my background...

This is my DD(JKU sport 3.73). During the summer, I tow a camper that fully loaded will be ~3500. When you throw the family in, the GVW will be 4400 lbs + 1000 lbs.(people and gear) + 3500 lbs = 8900 lbs(give or take but assume the high side just in case).

Initially, I was leaning towards a load D or E 285/75/16 or 305/70/16 tire. Based on research, this may be overkill. I do really would like "the combo", but since the tires are Load C on 15" rims(4 X 2205 lbs = 8820 lbs load), I am worried that I am risking tire blow out.

So, here are the questions:

1) Is "the Combo", MB 72 on Load C Duratacs 33 x 12.5 x 15 good enough for the towing I do? Does it ride ok, or feel mushy when towing? Any safety or stability concerns?

2) Are there any other light weight AT(load C, D or E) tires(and size) you recommend for my situation? Cooper ATP, Hankook ATM,...ect?

Thanks, Tony

WXman 10-11-2012 08:49 PM

Max GVW is around 6k lbs. So the 8,000+ capacity of the tires in the combo are more than adequate for the vehicle.

AUskier 10-13-2012 09:51 AM

Quote:

Originally Posted by aypanthony
Hey All,

I wanted to resurrect this thread since I am in the market for a new set rims and tires. Here is my background...

This is my DD(JKU sport 3.73). During the summer, I tow a camper that fully loaded will be ~3500. When you throw the family in, the GVW will be 4400 lbs + 1000 lbs.(people and gear) + 3500 lbs = 8900 lbs(give or take but assume the high side just in case).

Initially, I was leaning towards a load D or E 285/75/16 or 305/70/16 tire. Based on research, this may be overkill. I do really would like "the combo", but since the tires are Load C on 15" rims(4 X 2205 lbs = 8820 lbs load), I am worried that I am risking tire blow out.

So, here are the questions:

1) Is "the Combo", MB 72 on Load C Duratacs 33 x 12.5 x 15 good enough for the towing I do? Does it ride ok, or feel mushy when towing? Any safety or stability concerns?

2) Are there any other light weight AT(load C, D or E) tires(and size) you recommend for my situation? Cooper ATP, Hankook ATM,...ect?

Thanks, Tony

Your tires won't be loaded with 8900 lbs. the trailer tires should be carrying 90% of the trailer load. So really you're just needing to calculate the load on the rear tires with gear and tongue weight.

Just guessing a bit here but let's say your family weighs in at 700 lbs. So 5000 lbs /4 = 1250 per tire. (Actually the fronts are carrying more percentage because of the engine, but I don't know the true weight distribution so I went with the easy calculation) Add 350 lbs of tongue weight (10% of trailer weight) to the rear tires and they're carrying 1425 lbs per rear tire. That means the rear tires could handle 1500 lbs of gear in the back. But your wrangler will not. So "the combo" tire ratings exceed the capabilities of the wrangler. Going to a higher load range tire isn't necessary, and won't increase the load carrying ability of this vehicle.

If someone sees a problem with these calculations speak up cause I'm not a tire or Wrangler expert, but I have towed a lot in my life and the vehicle tires are almost never the weak point except possibly in a fifth wheel trailer situation.

Dew 10-13-2012 10:12 AM

I dont' plan on doing much towing with my wrangler. But I coughed up the extra $300 for E-rated tires(all five) just because they are tougher. 3ply sidewall vs 2ply on the C-rated. I drive around some trails with sharp jagged rocks it gets expensive replacing tires with torn sidewalls.

jadmt 10-13-2012 01:30 PM

Quote:

Originally Posted by Dew (Post 2886382)
I dont' plan on doing much towing with my wrangler. But I coughed up the extra $300 for E-rated tires(all five) just because they are tougher. 3ply sidewall vs 2ply on the C-rated. I drive around some trails with sharp jagged rocks it gets expensive replacing tires with torn sidewalls.

I went with E rated too and mine ride every bit as smooth as C rated tires.

ESP 10-27-2012 04:36 PM

I run Duratracs in 305/70/16 (33.1") and they are an E load range. The max cold psi is 65 and I run them between 35-37. I heard all the same things too about them being harsh and uncomfortable. I can tell you that these are very comfortable and almost indistinguishable between all the sets I've run in 33x12.5R15 that were all C load range when I ran them at 28-33psi. I've got a JK two door 2010.

ezymount 10-27-2012 06:21 PM

E vs ?
 
We have E rated 285/17/70 Nitto Trails on our jeep.. At 26lbs, I swear the ride is not as harsh as it was with the factory Goodyear Wranglers that we took off, which were in fact run at higher air pressure... My wife even noticed difference due to effects on her bad back..


Quote:

Originally Posted by MCDavis (Post 2497800)
The E rated tire will also give a harsher ride than the C rated tire. Due to how light our Jeeps are, the C rated tire is the better choice for ride quality.


JB71 10-29-2012 12:00 PM

Quote:

Originally Posted by ESP (Post 2932514)
I run Duratracs in 305/70/16 (33.1") and they are an E load range. The max cold psi is 65 and I run them between 35-37. I heard all the same things too about them being harsh and uncomfortable. I can tell you that these are very comfortable and almost indistinguishable between all the sets I've run in 33x12.5R15 that were all C load range when I ran them at 28-33psi. I've got a JK two door 2010.

I agree, I have E load rated tires too Cooper Discover AT3 235/85/16 (32") and my ride is just as smooth as my stock tires were. I have them set at 40psi and they are fine even on rough washboard dirt roads.

I wonder if folks are just repeating what others write about E load tires and have never actually tried them on a JK Jeep? If you went for a ride in my jeep (2 door sport) there is no way you could tell the difference in ride between my stock Goodyear 225/75/16's and the E load rated Cooper AT3, I know I didn't.

3JKs1H1 10-29-2012 12:25 PM

For a daily driver, you want a C load range tire. It will ride much better. An E range tire is perfect for a Ram 3/4 ton that runs at 70 psi and hauls all day. Its stronger sidewall is also better for a lighter JK trail tire, where sharp rocky trails damage a softer tire.

I have a set of 35" KM2's for trails, tough, but too heavy and no flex for a DD. I also have 3 sets of C rated Duratracs - much better for DD.

You can air down an E-rated tire, they still ride rough on a JKU - you will feel every bump. I have 4 JKUs and 6 sets of mounted spare tires in the garage (winter and summer for each JKU), you want a C rated tire as a DD.

jadmt 10-29-2012 01:09 PM

Quote:

Originally Posted by 3JKs1H1 (Post 2938372)
For a daily driver, you want a C load range tire. It will ride much better. An E range tire is perfect for a Ram 3/4 ton that runs at 70 psi and hauls all day. Its stronger sidewall is also better for a lighter JK trail tire, where sharp rocky trails damage a softer tire.

I have a set of 35" KM2's for trails, tough, but too heavy and no flex for a DD. I also have 3 sets of C rated Duratracs - much better for DD.

You can air down an E-rated tire, they still ride rough on a JKU - you will feel every bump. I have 4 JKUs and 6 sets of mounted spare tires in the garage (winter and summer for each JKU), you want a C rated tire as a DD.

I only use my 2013 jku as a dd and like my above post said it rides smooth as silk with E rated tires. I have done a couple hundred miles on washboard dirt road and no issues at all. I am guessing I just got lucky. I have used between 35-40psi.

WXman 10-29-2012 07:05 PM

Going from "D" rated Falkens to "P" rated stock tires was VERY noticeable. It was SO much softer over bumps and it rode like a Cadillac. You cannot tell me that "E" rated tires ride as good as the stockers with paper thin sidewalls. It's simply not possible.

And we've already established the fact that the JK has a maximum GVW of around 6,000 lbs. So "P" or "C" rated tires are all you will ever need for any job you can do with the vehicle.

Like the above poster said...the only reason to buy the "E" rated tires is if you need the stronger sidewalls for rocks. Otherwise they are overkill and will cost you more money every time you drive the Jeep because they are heavier.

JB71 10-29-2012 11:10 PM

Quote:

Originally Posted by WXman (Post 2939654)
Going from "D" rated Falkens to "P" rated stock tires was VERY noticeable. It was SO much softer over bumps and it rode like a Cadillac. You cannot tell me that "E" rated tires ride as good as the stockers with paper thin sidewalls. It's simply not possible.

Well, I invite you to come ride in my Jeep and see if you can tell the difference because I can't tell a decernable difference between these and the Goodyear 225/75/16 tires my Jeep came with. These Cooper AT3's are very smooth riding tires.

As far as being heavier...it all depends on the size you choose. Overall they will probably be slightly heavier if you compare the same size tire but I'm running on 235/85/16's so mine are probably lighter than most other 32in tires out there as they have far less surface area than most (I like pizza cutters). I am getting the exact same gas mileage I did with the 225's.

Again this is my opinion but I'm actually driving on E load tires (@40psi) with a 2012 2dr JK so there is no "speculation" on my part. I might add this is my every day driver that I use for work and I put about 25K a year so I'm in my Jeep a lot.

All I'm trying to say is folks shouldn't follow rank and file spouting blanket statement like "All E load rated tires will give you a rough ride" because that is simply not true.

jadmt 10-30-2012 06:12 AM

Quote:

Originally Posted by JB71 (Post 2940848)
Well, I invite you to come ride in my Jeep and see if you can tell the difference because I can't tell a decernable difference between these and the Goodyear 225/75/16 tires my Jeep came with. These Cooper AT3's are very smooth riding tires.

As far as being heavier...it all depends on the size you choose. Overall they will probably be slightly heavier if you compare the same size tire but I'm running on 235/85/16's so mine are probably lighter than most other 32in tires out there as they have far less surface area than most (I like pizza cutters). I am getting the exact same gas mileage I did with the 225's.

Again this is my opinion but I'm actually driving on E load tires (@40psi) with a 2012 2dr JK so there is no "speculation" on my part. I might add this is my every day driver that I use for work and I put about 25K a year so I'm in my Jeep a lot.

All I'm trying to say is folks shouldn't follow rank and file spouting blanket statement like "All E load rated tires will give you a rough ride" because that is simply not true.

X2 My Wild Country XTX sports E rated tires (made by copper by the way) are very nice and smooth riding. They are heavier but it has not made a difference in driving and mpg is 18-20mpg overall in 2500 miles so not sure it is affecting it too aweful much. I was concerned when I bought them and the nice thing about Wild Country tires sold thru Les Schwabb is they have a 30 day money back (in full) if you don't like them. They said if they are not what you want bring them back for a full refund or exchange. Day 29 came and went and still have them and the tire shop is about 3 minutes from my house.

Dew 10-30-2012 11:38 AM

Quote:

Originally Posted by JB71 (Post 2940848)

All I'm trying to say is folks shouldn't follow rank and file spouting blanket statement like "All E load rated tires will give you a rough ride" because that is simply not true.

I second this statement. My E rated Falkens ride just as smooth as the stock Goodyears my jeep came with.

They are a bit heavier, but so far I've noticed less than 1mpg drop on four tanks of gas.

watusibison 01-26-2013 06:29 AM

From what I see, most 17'' are E rated?

Jakesdad 01-27-2013 02:08 AM

Just as an update to my original post.............After several months of kicking the can down the road I ended up going with 285/70/17 "D" rated Duratracs. I noticed no difference whatsoever in the ride quality vs. the stock tires. About 1.5 mpg difference though which is about what I expected. Negligible road noise but you do hear it. I'm very happy with these tires.

Dew 01-27-2013 10:15 AM

What rims did you get? You were looking for 16" tires earlier weren't you?


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