How to Fixing a Sagging Rear End When Towing w/ a 2025 Toyota Sienna XLE AWD

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Question:

Hello I have a 2025 Toyota Sienna XLE AWD hybrid and I was wondering if the helper springs that you have will work with that vehicle to help with rear sag when loaded down or towing? I’m talking about the ones that kind of fit in between the existing coil springs?

asked by: Brian K

0

Expert Reply:

Hey Brian. I am sorry but the Coil-Rite Air Helper Springs item # F4155 you referenced will not work with the AWD models of the 2025 Toyota Sienna XLE.

The only option I have to help you with the sagging you're experiencing is a weight distribution system. If you could tell me how what trailer you have and how much your trailer weighs I would be happy to make a recommendation for you.

You can add this information and any other questions you have in the box below that says Reply to Jerred H.

expert reply by: Jerred H

0

Brian

6/9/2025

I was actually talking about the sumo coil spring helpers the CSS-1168R will these be ok with my sienna?

Jerred H.

6/11/2025

@Brian No, they will not for the same reason. The Coil SumoSprings Custom Helper Springs item # CSS-1168R do not work with the suspension on the AWD 2025 Toyota Sienna.

Brian

6/11/2025

@JerredH ok what do you suggest . I’m not towing a trailer I’m just looking for something to help with the sag in the back end when we are packed up and loaded down for vacations

Jerred H.

6/11/2025

@Brian Sorry, I do not have anything for the AWD 2025 Sienna's. All of the suspension enhancement upgrades are for the 2WD models.

See All (11) Replies to Brian ∨

Answer 1

Hey Steve! We have never officially confirmed the Coil SumoSprings will fit the AWD model. They probably do, I just can't say for sure. What I would do is get the Timbren SES #T58GR instead. These are confirmed to fit and will have the same level…

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Answer 2

The #CSS-1168R and #CSS-1195F are only confirmed to fit the FWD models but that doesn't mean there aren't Coil SumoSprings for your 2023 Sienna AWD. To find the right size you will need to measure the gap between in the middle of the coil.…

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Answer 3

Hey Nate! The Coil SumoSprings like #CSS-1168R are only confirmed to fit the 2WD models of the 2025 Sienna. However, that doesn't mean none of them will fit. All it means is that SumoSprings has only confirmed it on the 2WD. What you can do is…

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Answer 4

Hey Lg; the Firestone Coil-Rite Air Helper Springs #F4155 only fit the 2WD models. You may be able to use the Air Lift 1000 Universal Air Spring Kit like the #AL60908. However, you will have to measure to find the correct kit. First, unload your…

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Answer 5

Hello Juan, Congrats on the new ride! We have 2 options for suspension enhancement for your 2025 Toyota Sienna. The Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle #CSS-1168R, and the Firestone Coil-Rite Air Helper…

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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

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 8

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 9

Since the pin weight of your camper is 2.1k, I recommend going with the LoadLifter 5000 opposed to the 7500. While technically there is not reason you couldn't use the 7500 kit, it really is not necessary for a camper like yours. Generally the…

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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

The main difference between the Curt Trailer Hitch Receiver part #C13416 and the EcoHitch Hidden Trailer Hitch Receiver part #EH97FR is that the EcoHitch has a completely hidden cross tube whereas the Curt cross tube will be visible from the rear of…

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Answer 12

Hi David! There are quite a few hitches offered for your 2026 Honda Odyssey, so I definitely understand wanting to know the differences. There are basically three styles available for you and I have them broken out below: Exposed Crosstube: etrailer…

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How to Fixing a Sagging Rear End When Towing w/ a 2025 Toyota Sienna XLE AWD

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