Do I Want Sumo Springs or Timbrens to Pair with My Weight Distribution Hitch?

Question

Question:

I haul a RV trailer with a 2024 toyota tundra hybride using a WD hitch. However, I notice the rear sags, not much but noticeable to me. My question is should I get the Timbren T45MR 5000lbs or opt for a sumoSprings blue vs yellow? Thank you much

asked by: Barry M

0

Expert Reply:

Hello Barry,

Since you already have a weight distribution (WD) hitch and are only experiencing a little rear sag, I recommend going with SumoSprings. I typically only suggest Timbrens for those who are towing heavy loads regularly, as they can create a noticeably harsh ride when the vehicle is unloaded.

Given that the sag is “not much but noticeable,” the SumoSprings Custom Helper Springs Rear Axle # SS46PV (blue) should be a great fit. These are rated for 1,400 lbs, while the yellow version, # SS86PV, is rated for 2,800 lbs. Because your WD hitch is already handling most of the load distribution, I believe you’ll be well supported with the blue springs, and enjoy a better ride quality when unloaded.

How heavy is the tongue weight of your trailer you are hauling?

expert reply by: Kate F

0

SumoSpring Installed, has a little bit of a gap.
(click to enlarge)

Barry M.

3/25/2025

Tongue weight is rated at 750lbs.

Kate F.

3/25/2025

@BarryM Thanks for the tongue weight Barry. I would say you are definitely safe using the Blue # SS46PV.

Answer 1

Hello again Monty; I would get the black SumoSprings Custom Helper Springs #SS66PV. These have a capacity of 1,800 lbs so it gives you a bit over the blue without overdoing it. SumoSprings are a great choice if you don't want to go with the air…

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Answer 2

Hey Matt! Since your concern is ride quality you definitely want the SumoSprings over the Timbren. The blue #SS46PV have more than enough capacity for your application and won't have a negative impact on your ride when you aren't towing or…

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Answer 3

Hey David, I would test fit everything and see which orientation works best. With the spacer or without. Ideally when the kit is installed there will be 1 inch of space between the Timbren and the frame so whichever orientation gets closest to that…

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Answer 4

Hello David, thanks for reaching out. Between the TImbrens and the SumoSprings for your 2024 Toyota Tundra I definitely recommend the Sumos. They have a progressive spring rate so you don't get as rough of a ride when you are unloaded. Since your…

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Answer 5

Hey Scott, congrats on the new truck. I checked with Timbren's website and they do not go into specifics on how many spacers or what size you're going to need. The instructions for the Timbren Suspension Enhancement System item #T45MR say to…

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Answer 6

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

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Answer 7

Hey Mike, thanks for reaching out. For your 2026 Tundra SR5 towing a Rockwood Ultra Lite with about 946 lbs of tongue weight, I'd definitely go with the blue 1,400 lb SumoSprings #SS46PV. That's a pretty good-sized tongue weight, and the blue…

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Answer 8

Hey Jerry, you would not need to use any additional spacers with the Timbren kit part #T45MR that fits your 2024 Toyota Tundra SR5. Since your truck is all stock and this kit was designed to fit your vehicle no additional spacers would be required.

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Answer 9

When the SumoSprings Solo Custom Helper Springs item #SS65FR are installed on your 2020 GMC Sierra 1500 you will have a 1/2" - 1" of clearance with no additional cargo weight. This allows for you to have a comfortable ride when you are…

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Answer 10

Hey Gregg! The overall height of the Timbren Suspension Enhancement System #T45MR is 6". See the attached picture. This is confirmed to fit your 2025 Toyota Tundra 4x4 without a lift. If you need anything else feel free to reach out in the…

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Answer 11

Hey Thomas, we have the TORTNDR that fits your 2026 Toyota Tundra with our part number #T45MR. We also have the severe duty part #T65MR that is their part number TORTTNDR. What version of the Tundra do you have?

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Answer 12

Hey Carlos, the SumoSprings kit part #SS46PV would be a great idea to help provide your rear suspension with additional support when you are carrying the heavier camper that you have. Basically it would just allow your air suspension to not have to…

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