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post #1 of 22 Old 03-18-2016, 07:36 AM Thread Starter
littlebuzz
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Towing Question

I have a 2008 JKU w/ tow pkg. I also have a 19' Sea Pro walkaround with sterndrive. The boat & motor weigh 2500lbs. They sit on a 20' Karavan galvanized single-axle trailer. I don't know how much the trailer weighs but I'm pretty sure it's less than 1000lbs.

Is this a safe configuration?
Should I be looking at trailer brakes?
Should I consider a bigger tow vehicle?


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post #2 of 22 Old 03-18-2016, 08:37 AM
ronjenx
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We know you have a JKU, probably non-Rubicon.
We need to know:
Auto or stick...
Axle gear ratio...

If you have an automatic, it will have at least 3.73 gears.
If it's a stick, it could have 3.21 or 3.73.

It makes a difference in tow capacity.

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post #3 of 22 Old 03-18-2016, 08:42 AM
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YUP that data that rj asks for is critical for any real advice and-


With that much weight--you must have electric brakes !


Good luck


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post #4 of 22 Old 03-18-2016, 09:02 AM Thread Starter
littlebuzz
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It's an auto trans with 3.73 gears.

So with brakes added to the trailer, I should be good?


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post #5 of 22 Old 03-18-2016, 09:29 AM
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No, you'll probably be safe and legal, but




Quote:
Originally Posted by littlebuzz View Post
It's an auto trans with 3.73 gears.

So with brakes added to the trailer, I should be good?


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With 3.73 diff. gears you're gonna have a very uncomfortable time towing any number of miles--


The 3.8l v6/w auto and oem gears, is terribly under geared and should be re-geared if you plan on operating this way for a long time-


If your towing for short distance's you can doit, but expect a very sluggish/shifting problem-the 3.8l/auto jeep wasn't set up for towing anything-


Good luck




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post #6 of 22 Old 03-18-2016, 10:51 AM
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I tow a small travel trailer that weighs just under 3k dry and have no problems other than a slight difficulty in maintaining speed on long up hill grades. I have electric breaks, an OX weight distribution/anti-sway hitch and Tekonsha P3 Electronic Brake Controller. I am re-gearing to 5.13's this weekend to help with maintaining speed on hills. (Keep in mind I also have 35 Mickey Thompsons which weigh a ton.) Mine is a manual with the 3.6. So not apples to apples but still a comparison. I agree with the above posters on needing a re-gear for sure and would add to their list; a good weight distribution/sway hitch, a great break controller and possibly a big trans cooler.

Keep within the limits listed for your jeep, don't expect to win any race, set it up right, drive safely and you'll be fine.
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post #7 of 22 Old 03-18-2016, 11:02 AM Thread Starter
littlebuzz
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Towing Question

Quote:
Originally Posted by JIMBOX View Post
the 3.8l/auto jeep wasn't set up for towing anything-

Well that's a depressing thought. I have loved my Wranglers. Had a TJ for 10 years and this JKU for 8. I was hoping to trade it in on a 2016 Willys.

Towing the boat is requirement though. Last year was my 1st season with it and I used the JKU to hit a couple ramps down the road. It seemed to handle it OK, but I was worried about possible braking issues and highway driving.

Now I'm thinking I'll need a Grand Cherokee to safely do the job.


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post #8 of 22 Old 03-18-2016, 11:38 AM
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Quote:
Originally Posted by littlebuzz View Post
Well that's a depressing thought. I have loved my Wranglers. Had a TJ for 10 years and this JKU for 8. I was hoping to trade it in on a 2016 Willys.

Towing the boat is requirement though. Last year was my 1st season with it and I used the JKU to hit a couple ramps down the road. It seemed to handle it OK, but I was worried about possible braking issues and highway driving.

Now I'm thinking I'll need a Grand Cherokee to safely do the job.


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You're rare to not be unhappy towing with your jeep, but if you're happy--just add elec. brakes-


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post #9 of 22 Old 03-18-2016, 09:35 PM
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Quote:
Originally Posted by littlebuzz View Post
Well that's a depressing thought. I have loved my Wranglers. Had a TJ for 10 years and this JKU for 8. I was hoping to trade it in on a 2016 Willys.

Towing the boat is requirement though. Last year was my 1st season with it and I used the JKU to hit a couple ramps down the road. It seemed to handle it OK, but I was worried about possible braking issues and highway driving.

Now I'm thinking I'll need a Grand Cherokee to safely do the job.


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The 3.6 does a much better job, I had a 3.73 geared 6 speed and it towed fairly well. Not great, but it got the job done.


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post #10 of 22 Old 03-19-2016, 01:47 PM Thread Starter
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Thanks. Considering, the same Wrangler sold in the UK is certified to haul 4500 - 7000lbs, I think I get the Willys after all.

And instead of adding brakes to my trailer, I just get a new aluminum trailer with brakes.


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post #11 of 22 Old 03-19-2016, 01:56 PM
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towing 7k in a jeep set you up for the Darwin award.
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post #12 of 22 Old 03-19-2016, 05:33 PM Thread Starter
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Quote:
Originally Posted by 222Doc View Post
towing 7k in a jeep set you up for the Darwin award.
True, but it should easily handle my 3200 lbs safely.

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post #13 of 22 Old 03-21-2016, 06:53 AM
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It sounds like you're within the manufacturers specs. And they design in a certain amount of fudge factor. A bit depends on how far and how often you'll be towing. Are you hauling it long distances on a regular basis or short distances a few weekends a year? And I'd be careful what you put in it since you're at the outer limit weight-wise. The weight of food, water, extra fuel and other gear can add up pretty quickly.
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post #14 of 22 Old 03-21-2016, 11:11 AM
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I towed a 2800lb popup trailer with my 2007 jku 4.10 gears and 33" mud tires and it did just fine. Slow on steep grades but that was it. Did just fine. It did have brakes and I would HIGHLY recommend trailer brakes!

If you have 3.73's and stock size tires it will handle that load okay.

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post #15 of 22 Old 03-21-2016, 12:25 PM
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Quote:
Originally Posted by littlebuzz View Post
Thanks. Considering, the same Wrangler sold in the UK is certified to haul 4500 - 7000lbs,
???
Where do you find 7000 lbs - 3175Kg as a UK spec on a 3.6JK? The CRD is 2200Kg (4850lbs) and the highest rate of the JK models. And not sold in the US so cant be same Wrangler...
UK has different rules. In the UK you MUST have minimum 10% on the tongue. That adds to curb weight and GVWR limits cargo. Lets look at this closer. A 3.6 Unlimited is rated 2540Kg (6500lbs) GVWR, 2125 (4684lbs) Curb and has a 2000 (4409lbs) tow cap with 332 (731lbs) cargo cap.

To tow that 2000, starting at max and working down - 2000X.10=200 tongue weight, leaving only 132Kg for payload (including occupants). Driver weighting 175 lbs is 80Kg leaving 52Kg - 114 lbs - for passenger and luggage - two 175 lb occupants in a JK towing 2000Kg will exceed your weight limits with no additional cargo in the Jeep.

OR starting at bottom and going up, Curb 2125 plus two 80Kg passengers and 45 Kg of luggage is 2330Kg. As the tow vehicle cant exceed 2540 - you only have 210Kg left to carry any tongue weight - 210 Kg is 15% of 1400. So a 1400Kg trailer will require 210 Kg on the tongue and max you out. 1400Kg is 3086lbs.

In the US - you can simply add the GVWR of both together - and make sure your weight is distributed safely (weight % are only mandated in Commercial application - over 10,000k lbs - and we are RV exempt from commercial ANYWAY), a well built trailer can trail great at as low as 7% - depends on individual toe, camber and axle angles. You are RECOMENDED to be above 10% tongue weight - unlike the UK REQUIRING 10 minimum. The reality is - its the same weight (give or take a few lbs in conversion math rounding) in both countries, just a difference in how the distribution rules apply.

J Wm Bishop EA, ASADE
The wagon should, of course, be as light as possible, but strength should not be sacrificed to lightness, for on any but the regularly traveled roads, the wagon will get many a
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