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Unread 11-06-2013, 01:40 PM   #316
Wheelin98TJ
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Quote:
Originally Posted by jeepjamesw1 View Post
Yes, it is more a rolling resistance issue. But heavy unsprung weight can really affect many things for the worst.
Your friend has problems with his Rubi if he cannot drive over 55.

Its not being caused by the tires.

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Unread 11-06-2013, 01:51 PM   #317
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Quote:
Originally Posted by Wheelin98TJ View Post
Your friend has problems with his Rubi if he cannot drive over 55.

Its not being caused by the tires.
He switched from 33 narrow tires to fat and heavy 35" tires, no other changes. He says he normally drives through town at 2500 rpm and after the new tires he had to increase to 3500 rpm. He has a 5 speed manual and top speed in 4th is 55mph. He goes into 5th and his speed slows. Only change made to his jeep was the tires, so tell me again it is not the tires, unless you think the tire store sabotaged his jeep somehow.
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Unread 11-06-2013, 01:53 PM   #318
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Rotating mass affects braking and acceleration capabilities a lot, as well as gas mileage.
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Unread 11-06-2013, 03:15 PM   #319
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Quote:
Originally Posted by jeepjamesw1 View Post
He switched from 33 narrow tires to fat and heavy 35" tires, no other changes. He says he normally drives through town at 2500 rpm and after the new tires he had to increase to 3500 rpm. He has a 5 speed manual and top speed in 4th is 55mph. He goes into 5th and his speed slows. Only change made to his jeep was the tires, so tell me again it is not the tires, unless you think the tire store sabotaged his jeep somehow.
Its not the tires or you are exaggerating.
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Unread 11-06-2013, 04:46 PM   #320
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Originally Posted by Wheelin98TJ View Post
Its not the tires or you are exaggerating.
Be it as it may. He also went to around 9mpg. He didn't say anything about stopping distance but I'm sure that increased also. Exaggeration, maybe. This is just what he told me. I wasn't there. But I've heard of many Jeep owners on other forums complain about lost power when they went to a larger heavier tire. I'm sure this is why the factory changed the diff. gear ratio to 4.1 when they went with a heavier MT type tire. More torque multiplication. This is one of the reasons I'm looking to change out my stock MTR's with an AT type tire. Lighter and better rolling resistance. Plus the AT tires seem to do quite well on the Utah desert trails and the Moab slick rock I have close by me. Plus many of the MT tires are not that great on the Utah snow covered roads in the winter. It seems like the Cooper AT3 might just be the ticket, light, quiet and soft riding. I wish we had more reviews on the Toyo AT2's. 1997xj are your AT2's quiet?

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Unread 11-07-2013, 07:19 AM   #321
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Or just don't be foolish and regear, probably costs around the same as a new set of 5 tires. Always get a kick out of people trying to push big rubber with a 4.0 and stock gearing.
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Unread 11-07-2013, 10:08 AM   #322
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"push big rubber with a 4.0 and stock gearing"

Yea big rubber. Lots of resistance. I agree with that. Not sure how this relates to the best AT tire.

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Unread 11-07-2013, 12:23 PM   #323
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This thread has gotten so off track that it's becoming worthless really. It's become the antithesis of it's title.
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Unread 11-07-2013, 01:27 PM   #324
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Quote:
Originally Posted by jeepjamesw1 View Post
"push big rubber with a 4.0 and stock gearing"

Yea big rubber. Lots of resistance. I agree with that. Not sure how this relates to the best AT tire.
Quote:
Originally Posted by WXman View Post
This thread has gotten so off track that it's becoming worthless really. It's become the antithesis of it's title.
Tire weight is being discussed as an important factor in determining the best A/T tire.

I agree it is important, however I disagree with some of the claims being made.
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Unread 11-07-2013, 01:53 PM   #325
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When I had an LJ Rubi with an auto tranny, I put 33s on it.

Prior to regearing it lugged way to much in 4th gear on freeway. So I had to drive in 3rd gear on freeway, which worked fine at 55 mph on the speedometer (which was probably really 60 mph).

So I can say that with the larger tires I had to drive 55 to 60 mph in 3rd gear.

I could have driven faster, but it would have wound up to much rpm in 3rd or lugged in 4th.

Maybe that's what JeepJames buddy's situation was.

In any case, I'm ready to get back on topic. Weight is part of being on topic, but conflict and unpleasantness isn't good, and while I think there might be something to what James was saying, it's hearsay since it wasn't his Jeep and he doesn't know all the details of his buddy's Jeep. So let's please stop discussing his buddy's Jeep.
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Unread 11-08-2013, 12:33 AM   #326
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My favorite ATs

Comparing weight and height of my favorite AT brands/models in my favorite daily driver sizes...

As mentioned earlier in thread, "the best" tire in one size, might not be the best in another size. You have to study the specs for the size(s) you are interested in, and remember to consider the rating (P, C, D, or E).

I'm comparing load C because that's the only rating I consider appropriate for a 1/4 ton SUV like a Jeep. Load C is tough enough yet light enough. That's my opinion. I realize others opinions may differ.

Also, load C tires have deeper tread than P rated tires.

===

30 x 9.5 R15 load C

Hankook ATM weighs 40 lbs, is 29.5" tall.

Cooper AT3 weighs 39 lbs, is 29.3" tall.

Hercules AT2 weighs 38 lbs, is 29.3" tall.

Toyo AT2 weighs 37 lbs, is 29.5" tall.

Duratrac and Mastercraft CT are NOT available in 30 x 9.5 R15.

In 30 x 9.5 R15 there are no signifigant weight or height differences, IMO. Only minor differences. That being the case, I prefer Hankook ATM and Cooper AT3 in this size (because I'm most familiar with them, especially in this size). I'm sure the Toyo AT2 is also excellent in 30 x 9.5 R15 and I could be quite happy owning Toyo AT2.

I could be very happy with any of these tires in 30 x 9.5 R15, but I most prefer ATM. I'd buy Hankook ATM in this size.

===

31 x 10.5 R15 load C

Hankook ATM weighs 51 lbs, is 30.5" tall.

Cooper AT3 weighs 44 lbs, is 30.2" tall.

Hercules AT2 weighs 43 lbs, is 30.2" tall.

Duratrac weighs 43 lbs, is 30.5" tall.

Toyo AT2 weighs 40 lbs, is 30.5" tall.

Mastercraft CT weighs ?, is 30.5" tall.

In 31 x 10.5 R15 the Duratrac and Toyo AT2 impress me for being tall enough, light enough, and tough enough). If I could fit 30.5" tall, I'd buy Toyo AT2 or Duratrac in this size. If tire clearance is tight, I'd buy Cooper AT3 or Hercules AT2 since they're slightly shorter.

The downside (for me) of Duratrac and Mastercraft CT is more aggressive than I want. The downside (for me) of Toyo AT2 is I don't like tread design as well as Cooper AT3. The Cooper AT3 has more edges and slightly larger voids than Toyo AT2. The Toyo AT2 isn't quite aggressive enough for me, though I'm sure it's a good tire.

The Hankook ATM is to heavy for this size, IMO.

===

245/75R16 (31 x 9.5 R16) load C

Duratrac weighs 40 lbs, is 30.5" tall.

Cooper AT3 weighs 38 lbs, is 30.5" tall.

Hercules AT2 weighs 37 lbs, is 30.5" tall.

Hankook ATM, Toyo AT2, and Mastercraft CT 245/75R16 are NOT available in load C.

The Cooper AT3 and Hercules AT2 impress me in this size. I'd buy Cooper AT3 or Hercules AT2 in this size.

In this size, I give runner up to Duratrac because it's really good in this size (IMO), but for my needs I don't want a tire that aggressive (but for some people Duratrac could be ideal for their needs).

===

265/75R16 (32 x 10.5 R16) load C

Cooper AT3 weighs 46 lbs, is 31.6" tall.

Hercules AT2 weighs 45 lbs, is 31.6" tall.

Toyo AT2 weighs 45 lbs, is 31.7" tall.

Duratrac weighs 45 lbs, is 31.6" tall.

Mastercraft CT weights ?, is 31.6" tall.

Hankook ATM 265/75R16 is NOT available in load C.
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Unread 11-08-2013, 09:53 AM   #327
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Charley3
I'm looking forward to your next post concerning the 265/75R16 size.

Sorry if I offended anyone when I posted what my "buddy" told me after I asked how his last Moab trip went. On a lighter note, he said he ran several trails and had fun. I think having fun is what it is all about anyway.

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Unread 11-08-2013, 12:50 PM   #328
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Quote:
Originally Posted by jeepjamesw1 View Post
Charley3
I'm looking forward to your next post concerning the 265/75R16 size.

Sorry if I offended anyone when I posted what my "buddy" told me after I asked how his last Moab trip went. On a lighter note, he said he ran several trails and had fun. I think having fun is what it is all about anyway.
All is well. No worries.

The 265 info will be added to my prior post.
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Unread 11-09-2013, 05:41 PM   #329
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See post 326. I just updated it.
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Unread 11-10-2013, 12:33 PM   #330
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Thanks, nice post. I like the Toyo AT2 in the 265x75R16C size as per weight and height and Duratrac being more aggressive but Cooper looks good also.

Last edited by jeepjamesw1; 11-10-2013 at 10:36 PM..
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