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Old 06-25-2014, 07:11 PM   #1
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Towing 233S with Suburban

Looking to purchase a Shamrock 233S and want input on whether a 2010 Chevy Suburban V8 is sufficient for towing it. (GVWR is 7200#, GCWR is 14000#, GAWR R is 4200#, GAWR F is 3500#, max TT weight is 8400#). I will have weight distributing hitch and anti-sway. Of course the dealer we're looking to purchase from says the Suburban will be fine. Any one out there using a similar vehicle?


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Old 06-25-2014, 07:20 PM   #2
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I am towing mine, which is a little lighter with an '03 Suburban. The coil spring and P tires make it wiggle a bit more that towing with my '01 Sierra with leaf spring and LT tires. I will bump up the tires to max sidewall pressure and I put helper air bags in the coils to help with the rear end sag. Using a WDH and 2 friction antisway bars, it handles decently. She won't win any races and is happiest at 60 to 65 mph. It is doable. Good luck and happy camping.


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Old 06-25-2014, 09:40 PM   #3
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if it has the factory HD tow package, it should be good to go.
just watch your payload max carefully.
SUV's are famous for having less payload than you would think, based on what the towing capacity is.

i have an Avalanche, which is the same vehicle as the Burb, just has a pickup bed instead of the third row and shorter roof.

you didn't mention the required brake controller.
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Old 06-26-2014, 06:38 AM   #4
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I pull a 233S ROO with my 2012 Burb...which has the factory tow package and "auto level" suspension. I currently use the chain style WDH and 1 friction sway bar, soon to upgrade to the Equalizer WDH. My ROO posts a GVWR of 6,402 and I have NO PROBLEM towing...60-65 is the "sweet spot" on the highway depending on "flatness of road" and head winds. My guess is you wont have any problems as long as you have your WDH set so everything is as close to level as possible and you pay attention to your cargo.

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Old 06-26-2014, 06:46 AM   #5
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Highly recommend replacing the P tires with LT LR D or E. The P tires have too soft sidewalls for towing without squirm.
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Old 06-26-2014, 07:37 AM   #6
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Quote:
Originally Posted by ebemis View Post
I pull a 233S ROO with my 2012 Burb...which has the factory tow package and "auto level" suspension. I currently use the chain style WDH and 1 friction sway bar, soon to upgrade to the Equalizer WDH. My ROO posts a GVWR of 6,402 and I have NO PROBLEM towing...60-65 is the "sweet spot" on the highway depending on "flatness of road" and head winds. My guess is you wont have any problems as long as you have your WDH set so everything is as close to level as possible and you pay attention to your cargo.

HAPPY Camping!

That's the kind of response I needed- someone who has the same setup I would have. I've been concerned about the tongue weight with cargo and total vehicle weight. I'm feeling like there's not much margin of error. Wish it was easy to test-tow a TT to the scales before you buy!


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Old 06-26-2014, 04:30 PM   #7
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you know OldCoot...I have managed with my stock "P" tires but definitely felt that "squirm" you mention....just waiting to wear enough tread out to make purchasing new tires make sense, and when I do LT will be at least what I put on............

UNLESS the Diesel Monsters on this site FINALLY break me down and I trade a perfectly functional SUV for a Diesel TTTTTTTTRUCK! ;-)
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Old 06-28-2014, 07:03 AM   #8
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Towing 233S with Suburban

If you have P tires rated well above your GAWR and a good quality WDH like the Equalizer, I don't see the benefit of LT tires, especially if you only tow occasionally and the Suburban is a daily driver.

It certainly doesn't make sense for my setup. I've never felt any squirm, just some bounce which an extra leaf spring took care of.
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Old 06-28-2014, 07:08 AM   #9
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Originally Posted by itat View Post
If you have P tires rated well above your GAWR and a good quality WDH like the Equalizer, I don't see the benefit of LT tires, especially if you only tow occasionally and the Suburban is a daily driver.

It certainly doesn't make sense for my setup. I've never felt any squirm, just some bounce which an extra leaf spring took care of.
Extra springs, heavier shocks, air bags, etc will not remove the weaker sidewalls of a P rated tire regardless of the size. The squirm is still there. Just sitting still, shove sideways on the TV and see what happens.
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Old 06-28-2014, 07:57 AM   #10
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OC, I completely agree that all that contributes to the towing and payload capability but in my case my P275/65R18 Bridgestone Dueler A/T Revo 2 tires have a weight rating well over the axle ratings so the tires are not the limiting factor.

We went on a trip last year to PEI and Nova Scotia with my DW and 3 teenage DSs and never felt squirmy ever. The only thing I felt was a push from passing vehicles but it was never uncomfortable. Every setup is different but mine feels fine.

With the extra leaf spring and stiffer P A/T tires, it's plenty stiff enough as a daily driver and occasional tow vehicle for my 5200# (fully loaded) Roo.
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Old 06-29-2014, 11:13 PM   #11
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I just switched out the P245/70R17s on my Durango for the same size in LT LR-E. I needed new tires, anyway. I'm happy with the result while towing my new 21DK. Unless very heavily loaded, the Suburban would have to perform as well, if not better.

I inflated the tires according a pressure chart found here. With only 3700# on the rear axle fully loaded and weighed on a scale, the specs indicate that I should have 40# in the rear tires. (It lists only LTX A/T for 245/70, not M/S, but where both M/S and A/T tires are available in the same size, the pressures are the same.)

40# is lower than I expected. I'm guessing that 45 or 50 may firm up the ride while towing. I'm not concerned with disproportionate wear, for the little towing I do relative to when I'm not.
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Old 09-01-2014, 11:53 AM   #12
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Most Suburbans come with a 3.08 gear. You want a 3.42 gear to get the proper tow rating. 7200 trailer weight max. Have not seen that with a 1500 series burban
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