How To Prevent Rear End Sag While Towing with a 2017 Infiniti QX70

Question:

Hello, Your suggestions for the Hayes sway control and Echo Bluetooth trailer brake controller were great. I purchased both last month and work great with my 3,000 travel trailer and Qx70! I still have an issue with rear end sagging around 2 -3 inches since no weight distribution is available. As stated in your previous response you had referred to Coil SumoSprings Helper Springs. Any idea where i can find these for my vehicle and possible installation? Im located in Montreal Canada and cant seem to find shops that are aware of this solution for my vehicle. Then in order to counteract the added weight placed on the vehicle from the tongue of the trailer, I recommend the Coil SumoSprings Custom Helper Springs. In order to provide a part number I would need you to take a few measurements which can be found in the attached document. This is the only suspension enhancement option we have for you Lots of thanks for any help you can provide!

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Helpful Expert Reply:

Thank you for your purchase and I am glad that you liked the Curt Echo Mobile Trailer Brake Controller part # C51180 and Hayes Sway Master Electronic Sway Control System part # HA81775 I recommended. As mentioned, the Coil SumoSprings Custom Helper Springs are the only option for your vehicle as they do not offer any other suspension enhancements. We do sell these and you can install them yourself because they are super easy but in order to provide you with a part number I need you to take the measurements in the attached photo. Once you can provide these I can then give you a part number to order.

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helpful expert reply by:
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Conner L

Question:

Here are the requested measurements (in inches) A = 5 1/4" B = 5/8" C = 1 3/4" D = 1 1/2" E = 2 1/8" F = 1 7/8"

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Helpful Expert Reply:

I spoke to SuperSpring and they informed me that based on the measurements that you provided, the Coil SumoSprings Custom Helper Springs part # CSS-1168 are what you need. Please disregard the "Not Confirmed to Fit" note.

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helpful expert reply by:
1
Conner L

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