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Thread: Can not decide 33' or 35' duratrac for 2012 sahara Reply to Thread
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Topic Review (Newest First)
12-12-2011 04:25 PM
Dsmooth292 I now the 33s probably wont affect the power and handling that bad. This thing is like driving a go cart. But i think the 35s will take the light and great handling away, because it has awhole lot more tire to move. I just wish the duractracs came in a size between. There is just not much difference from stock to a 32.8 inch duractrac
12-12-2011 03:55 PM
MudRunner If you plan on offroading the extra 1"? of clearance from the 35s might be helpful, plus it will probably look better too. However, if this is a daily driver I would recommend the 33s as the will have a much smaller affect on the rpm. From what I've heard the 2012 with 3.21s is similar to the 2007-2011 with 3.73s, and lots of people seem to run 33s on is setup with no problems
12-12-2011 03:35 PM
Dsmooth292 before i bought my jeep i knew nothing about gears, I am coming from my FJ cruiser, and they only came one way from the factory, if i would have know better i would have got 3.73s in my jeep. I might go over to the dealer ship and see if they will let me drive one with all the goodies and see how it drives. Because know i thinking about buying a teraflex 2.5 inch shocks and springs to put in my jeep. I just didn't now if the weigth of ducatrac would make this possible because they only weight 60 lbs, Most tires in that 35 range in the 70-85 lbs range a piece. That is alot of weight to get moving.
12-12-2011 02:24 PM
kjeeper10
Quote:
Originally Posted by ESP

I guess I'm just considering the weight difference more than the diameter. I know both are going to affect everything but I wouldn't think it be much different starting with it and the bigger tires. Before the combo, I used to run 60 lbs MTS.
1st gear is very short/low in our 6 speed. I always wondered if there is "room to play"
so to speak. Or if that even makes a difference or not.
I might be doable depending on your driving style.
I do mostly city stop and go. Would not work for me.
12-12-2011 02:06 PM
ESP
Quote:
Originally Posted by kjeeper10 View Post
I agree
I guess I'm just considering the weight difference more than the diameter. I know both are going to affect everything but I wouldn't think it be much different starting with it and the bigger tires. Before the combo, I used to run 60 lbs MTS.
12-12-2011 02:03 PM
kjeeper10
Quote:
Originally Posted by i82much

Man that sounds hard on a clutch.
I agree
12-12-2011 01:50 PM
ranjr
Quote:
Originally Posted by kjeeper10

How bout the salesman that has to drive with you?
This just shows your a novice. Any good sales manager will allow you to take the vehicle overnight as they know it's easier to sell something that's already been accepted into the family.

Also, how do you think so many new vehicles end up with a couple hundred miles on them? Do you really think they're driven 5 miles at a time?
12-12-2011 01:49 PM
i82much
Quote:
Originally Posted by ESP View Post
While we are on topic regarding 35s with 3.21s, how do you think the BFG ATs in 35x12.5R15 (54lbs each) would feel with a manual 2010 and 3.21s compared to 33x12.5R15 (49lbs each)?
Man that sounds hard on a clutch.
12-12-2011 01:47 PM
ESP While we are on topic regarding 35s with 3.21s, how do you think the BFG ATs in 35x12.5R15 (54lbs each) would feel with a manual 2010 and 3.21s compared to 33x12.5R15 (49lbs each)?
12-12-2011 01:41 PM
rics1997 The new autos final gears are so close to a manual which was on older models that you can just use the old gear chart for the new auto and be very close. The new auto on 3.21 and the manual will run the same.
12-12-2011 01:33 PM
i82much Has anybody done the math on cruising RPM with the auto? I am curious if you would be effectively running a 4-speed auto at that point.

Engine RPM Calculator

I got something like 1800 rpm @ 70 mph in fifth gear. I dunno, to me that's pretty borderline but I guess you'd have to drive it to really find out. Hills and/or towing and such I have a feeling 35's and 3.21's will be annoying even with the new trans, probably about like 3.73's and 35's in a 2011 auto?
12-12-2011 01:26 PM
rics1997 35's on 3.21 is not a good option. 35's add so much more stress and not having the correct gears to match just adds to it.
12-12-2011 01:25 PM
kjeeper10
Quote:
Originally Posted by ranjr
Any buyer that doesn't request to take the vehicle for a night can't be taken seriously. A 5 minute test ride doesn't show anything.
How bout the salesman that has to drive with you?
12-12-2011 01:22 PM
ranjr Any buyer that doesn't request to take the vehicle for a night can't be taken seriously. A 5 minute test ride doesn't show anything.
12-12-2011 01:03 PM
gluestick
Quote:
Originally Posted by ranjr View Post
So who would buy one after a test drive if it was in fact slower than a snail? The fact is the new 5 speed changed the game with gearing. It has a much steeper 1st gear and O/D.

I agree it won't be as peppy as a 3.73 or 4.10 but it's all in the eye of the beholder. What you think is sluggish, others may not. How did anyone manage with Flathead V8s or non-turbo charged diesels. Sure it will do 0-60 in 12 seconds instead of 7 but it will look damn good doing it.
And on that note, what percentage of buyers take their test drive out onto the highway? I know that most every test drive I have been on the salesman tries to keep it short and sweet on terrain that favors the vehicle. My salesman wanted to go out on a 5 mile loop through some flat farmland when I shopped mine. I told him I had another idea and we went out for nearly an hour over hill and dale, merging onto the highway twice, and then passing a few vehicles over 75 mph. Sadly many people don't really "test drive" their new cars before buying. I bet you could probably sneak 37's with the 3.23 onto some Jeeps and the mallcrawler-bling-tastic shoppers wouldn't even think twice about the available power, they would be too busy gawking at the tires and lift.
12-12-2011 01:00 PM
MTH
Quote:
Originally Posted by ranjr

So who would buy one after a test drive if it was in fact slower than a snail?
Plenty of people. When I was looking for my 2010, several dealers had 2010 Sports with auto transmissions and 35s on their lots. They always sold, even though many on this forum will (rightfully) complain about the performance of that set up.

The "fact is" that the poster I responded to was contending that 3.21s are fine for 35s based on the fact that he has seen dealers offer wranglers that way. My response was that this means nothing, which is clearly true--if a dealer is wiling to sell a 2010 with an auto and 3.73s on 35s, they are plainly not considering gearing. They want it to look awesome on the lot and sell it to googley-eyed buyers without having to have their techs perform a complicated and expensive driveline mod first.

Whether that poster is okay with the performance is a separate question. No doubt the new engine/auto on 3.21s will handle 35s better than the old engine/auto on 3.73s, but I don't think either would make me happy. For the new set up, I'd want 3.73s minimum or 4.10s for 35s.
12-12-2011 12:47 PM
gluestick Hey, you brought up the 35" thing first...
12-12-2011 12:27 PM
kjeeper10
Quote:
Originally Posted by gluestick

Now you have me wondering how this setup would work with duratrac 35's on the 15" MB72 (or "the combo" as it is now called)? I have the 3.73, and I am now wondering if these are light enough to work well with my setup. Also, if they do measure smaller as someone implied, this would likely work ok with a 2.5 BB. Is this crazy talk?
Ot oh
12-12-2011 12:22 PM
ranjr
Quote:
Originally Posted by MTH

That means nothing. Dealers are trying to sell jeeps. 4" lifts and 35s look good no matter what gears are in the diffs. A regearing adds $2k on the window sticker and will in all likelihood make it harder to sell.
So who would buy one after a test drive if it was in fact slower than a snail? The fact is the new 5 speed changed the game with gearing. It has a much steeper 1st gear and O/D.

I agree it won't be as peppy as a 3.73 or 4.10 but it's all in the eye of the beholder. What you think is sluggish, others may not. How did anyone manage with Flathead V8s or non-turbo charged diesels. Sure it will do 0-60 in 12 seconds instead of 7 but it will look damn good doing it.
12-12-2011 12:18 PM
ESP
Quote:
Originally Posted by gluestick View Post
I figured someone would be rocking this by now if they did, thanks for the quick reply.
I wish they did because it would give BFG a run for their money in that category for 15x8 wheels.
12-12-2011 12:13 PM
gluestick
Quote:
Originally Posted by ESP View Post
Goodyear does not make 35" duratracs for 15" wheels.
I figured someone would be rocking this by now if they did, thanks for the quick reply.
12-12-2011 12:11 PM
ESP
Quote:
Originally Posted by gluestick View Post
Now you have me wondering how this setup would work with duratrac 35's on the 15" MB72 (or "the combo" as it is now called)? I have the 3.73, and I am now wondering if these are light enough to work well with my setup. Also, if they do measure smaller as someone implied, this would likely work ok with a 2.5 BB. Is this crazy talk?
Goodyear does not make 35" duratracs for 15" wheels.
12-12-2011 12:06 PM
gluestick
Quote:
Originally Posted by Dsmooth292 View Post
. I just know that the duratracs in 35s are so light weight at 60lbs. I had 285\7017 hankook dnypros mts on my fj cruiser last year and they were so heavy. I think they were around 65lbs for a 33 inch tire. .
Now you have me wondering how this setup would work with duratrac 35's on the 15" MB72 (or "the combo" as it is now called)? I have the 3.73, and I am now wondering if these are light enough to work well with my setup. Also, if they do measure smaller as someone implied, this would likely work ok with a 2.5 BB. Is this crazy talk?
12-12-2011 11:54 AM
MTH
Quote:
Originally Posted by Dsmooth292
At the dealer they are doing 4 inch lifts and 35s on new sport models with 3.21 gears.
That means nothing. Dealers are trying to sell jeeps. 4" lifts and 35s look good no matter what gears are in the diffs. A regearing adds $2k on the window sticker and will in all likelihood make it harder to sell.
12-12-2011 11:25 AM
panthermark
Quote:
Originally Posted by golfpunks View Post
was in the same situation,, i knew if i went with 33's, i would have upgraded soon to 35's so i just did it now, also did the regear because i was on the same gear ratio as you, so glad i splurged and got it done all at once, i knew if i waited, in the end it would cost me the same if not more,,
Can I ask...
Why not go with a Rubi and 4'10's out of the gate?
12-12-2011 11:20 AM
Dsmooth292 At the dealer they are doing 4 inch lifts and 35s on new sport models with 3.21 gears. They say the new motor has enough power to pull the bigger tires. I would like to try one and see i have not been back yet to drive on. I just know that the duratracs in 35s are so light weight at 60lbs. I had 285\7017 hankook dnypros mts on my fj cruiser last year and they were so heavy. I think they were around 65lbs for a 33 inch tire. I am just wandering if i should step it up with a 2.5 inch lift. It just sucks that the duratracs in 33 and 35s cost the same price.
12-12-2011 09:00 AM
phottomatt No re-gear in the world will help you with 33' or 35'(foot) tires.
12-12-2011 08:35 AM
sneck if you are considering buying 35s, just buy them the first time and add on to the jeep to make them work better. the only thing worse then having to shell out $1500 to regear is to have to shell out $3000 to replace your new $1500 tires and then decide theyre too small and buy the 35s anyways. The duratracs are light enough and run small anyways. Buy the right tire the first time
12-12-2011 08:29 AM
Daniel_M
Quote:
Originally Posted by ranjr View Post
Get the 315s! You may have to trim a little if you off road it but you should be fine. I also wouldn't worry about the 3.21 ratio as its been proven many times to be geared better than an '07-'11 Auto with 3.73s and plenty of people run 315s with 3.73 on pre 2012s.

You'll have "tire envy" every time you pull up to another lifted Jeep if you go with the smaller ones.
I agree with this, I had 305/70R16 and had tire envy and went 315/75R16 because of it. You will, however, want to regear though. I say do it once, do it right and don't look back.

-Dan
12-11-2011 09:27 PM
ranjr Get the 315s! You may have to trim a little if you off road it but you should be fine. I also wouldn't worry about the 3.21 ratio as its been proven many times to be geared better than an '07-'11 Auto with 3.73s and plenty of people run 315s with 3.73 on pre 2012s.

You'll have "tire envy" every time you pull up to another lifted Jeep if you go with the smaller ones.
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