Reducing Suspension Thud Caused By Speed Bumps On a 2017 Lexus GX 460

Question

Question:

I have 2017 Lexus GX460 with OEM Air Suspension and this car suffers from a hard thud felt at the rear after descending from speed bumps where Im forced to either go fast or crawl over speed bumps. I dont tow weights just daily driving. Will it help me with speed bumps when normal driving?

asked by: Marvino

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Expert Reply:

The Timbren Rear Suspension Enhancement System # TTORSEQ will help with your daily drive on your 2017 Lexus GX 460. The rubber springs are designed to help cushion the road shock that comes from pot holes and speed bumps. It will also stabilize your ride while you drive by providing more stability when turning. The individual springs will work independently of each other to provide support where it is needed.

You can see the Timbren's installed in the video I linked below on a 2015 GX 460 and tested on our test course with speed bumps. You can see how the Timbren's help to cushion the bumps.

The Timbren Front Suspension Enhancement System # TTOFTAC4A can also be installed to help reduce any of the road shock that you feel on your front suspension. This will install even easier than the rear system as they are both bolt on and do not require any specialty tools.

expert reply by: Bud M

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Answer 1

The Timbren Suspension Enhancement System #TTORSEQ that you referenced for the rear axle of your 2016 Lexus GX 460 weighs just about 6 pounds total (3 pounds per spring). The Front Timbren Suspension Enhancement System #TTOFTAC4A for your vehicle…

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Answer 2

The Timbren Active Off-Road Bumpstops part #TABSTORSEQ which are a fit for a 2023 Toyota 4Runner are pretty similar to the SumoSprings Solo Custom Helper Springs like part #SS68DR. The Timbrens provide more support but the SumoSprings ride…

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Answer 3

Yes, it does. The Spacer Kit for Timbren Suspension item #T68MR will work with the Severe Service Timbren Suspension Enhancement System item #TFRTT350J. This system is confirmed to fit the 2023 Ford F-250. It already includes a pair of 1"…

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Answer 4

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…

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Answer 5

As your 2021 Toyota 4Runner is lifted, you will indeed need to use spacers when installing a Timbren suspension enhancement system. The correct spacers will depend on if you will be using both rear and front jounces, and I have all options for your…

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Answer 6

You are right on with my recommendation. For rear suspension enhancement for your 2005 Toyota 4Runner towing a single axle Jayco camper weighing around 2750 unloaded the SumoSprings #SS78DR is what I recommend. SumoSprings are a lot softer than…

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Answer 7

The Timbren Active Off-Road Bumpstops #TABSTORSEQ referenced in your question are confirmed to fit your 2016 Toyota 4Runner. As you mentioned, you should have 1/2 inch to 1-1/2 inch gap between the rubber spring and contact point when the vehicle…

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Answer 8

To install a 7-Way harness on your 2023 Toyota 4Runner, I recommend the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package item #C55774. This custom-fit connector plugs into your 4Runner's factory tow package wiring harness,…

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Answer 9

The Timbren Rear Suspension Enhancement System #TTORSEQ will help with your daily drive on your 2017 Lexus GX 460. The rubber springs are designed to help cushion the road shock that comes from pot holes and speed bumps. It will also stabilize your…

view full answer...