Recommended Suspension Enhancement for a 2019 Toyota Highlander that Sags When Pulling a Trailer

Question

Question:

I have a 2019 Toyota Highlander that seems to sag quite a bit when the camper trailer is loaded. We have a weight distribution hitch already and still the SAG is pretty severe. Do you have any recommendations for suspension leveling or enhancements for the rear vehicle?

asked by: Kyle A

0

Expert Reply:

Hey Kyle. The only suspension enhancement I have that will help with your Highlander's sagging issue is the Coil SumoSprings Custom Helper Springs for Coil Spring Suspension item # CSS-1145R. These insert in your rear coil springs and limit their range of motion.

What kind of weight distribution hitch do you have and how heavy is your trailer? I'm wondering if you have an underrated weight distribution hitch or it's not set up correctly.

expert reply by: Jerred H

0

Jerred H.

9/2/2025

Hey Kyle, did the Coil SumoSprings help with the sagging issue on your Highlander? I'm asking because your experience could help others dealing with similar suspension challenges.

Answer 1

Hi Justin! The SumoSprings Solo Custom Helper Springs - Rear Axle #SS68DR would be a very good option for your 2023 Toyota 4Runner. They will provide up to 1,400 pounds of support (at 50% compression) and I think that would be plenty for your…

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Answer 2

The SumoSprings kit part #CSS-1145R is exactly what you are looking for. This will give the rear suspension of your 2021 Toyota Highlander additional support to get rid of the sagging you mentioned. You are right that a weight distribution system…

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Answer 3

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Answer 4

Hey Tim, the quietest roof top RV AC unit is the Furrion Chill Cube part #FR69TD for sure. It's also the most powerful and coldest blowing. A coworker of mine installed one in his RV and was blown away how quiet it was compared to what he had…

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Answer 5

Hey Leigh, the Furrion Vision S observation systems are the best and most reliable options out there as they have proven to have the best reception and overall reliability. For a version that comes with a 5 inch monitor we have the part #FOS05TASF or…

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Answer 6

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 7

Hey Doug! The Firestone Ride-Rite Air Helper Springs #F35FV are the right kit for your 2026 Ford F-350 FX4 dually. However, you will need to measure to be sure it fits. The distance from the top of your rear axle to the top of the jounce bump stop…

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Answer 8

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Answer 9

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 10

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 11

We have two rear-axle suspension kits for the 2013 Toyota Highlander and one works with the 2- and the other with the 4-wheel-drive models. However, these kits are not air-bag types, but rather a micro-cellular polyurethane foam helper spring that…

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Answer 12

Hey Henry! Yes, the PowerMax AC to DC Converter #PM94VR is a great choice for your setup. The 55A output pairs well with your 900W generator, so you’ll get fast charging without overloading it. This will give you lithium compatibility with efficient…

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Recommended Suspension Enhancement for a 2019 Toyota Highlander that Sags When Pulling a Trailer

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