How to Reduce Toyota Tundra Squat, Sway & Bounce in Your Own Driveway
If your Toyota Tundra squats under load, feels unsettled when towing or continues bouncing after a bump, the rear suspension may need more support and control. That does not necessarily mean replacing the suspension, installing an air system or taking the truck to a shop.
For 1999–2021 leaf-spring Toyota Tundra models, RoadActive Suspension® provides a bolt-on rear suspension upgrade that can be installed at home with common hand tools. Once it is fitted and properly tensioned, there are no air pressures to monitor, compressors to install or adjustments to make every time the load changes.
A true DIY, fit-and-forget suspension upgrade.
Watch a Toyota Tundra RAS® Install in a Real Driveway
This episode of Ride With RAS® follows a Toyota Tundra owner through the installation process—from opening the box and reviewing the instructions to fitting the system beneath the truck and getting back on the road.
There is no vehicle lift, professional shop or complicated air system. The install is completed in a residential driveway using the printed instructions, common hand tools, a jack and properly placed jack stands.
That is one of the biggest advantages of RAS: it delivers a meaningful rear suspension upgrade without turning the truck into a major project.
Why Toyota Tundra Owners Upgrade the Rear Suspension
The factory suspension has to balance unloaded comfort with the ability to carry passengers, cargo and trailer tongue weight. Once weight is added behind or over the rear axle, that compromise can become more noticeable.
The back of the truck drops while the front rises as cargo or trailer tongue weight is added.
The truck feels less settled through turns, lane changes or crosswinds.
The rear suspension continues moving after dips, bridge joints and uneven pavement.
The rear axle can move or wind under acceleration, especially on loose or uneven surfaces.
A useful Toyota Tundra suspension upgrade should add support when the truck needs it without creating unnecessary harshness when it does not.
How RoadActive Suspension Works with the Tundra’s Leaf Springs
RoadActive Suspension works with the Tundra’s existing rear leaf springs rather than replacing them. The fully mechanical system applies controlled tension to the leaf spring pack and progressively responds as the suspension moves and the load increases.
That progressive action helps strengthen and stabilize the rear suspension while allowing it to remain compliant during normal unloaded driving.
- Up to approximately 2 inches of squat reduction, depending on the truck, load and setup
- Improved control of sway and body roll
- Reduced excessive bounce and rebound
- Better rear suspension stability while towing or hauling
- Same-as-stock or improved unloaded ride quality
- Reduced wheel hop and axle wrap
A True DIY Toyota Tundra Suspension Install
Most RAS installations take approximately 60–90 minutes and require basic hand tools, a jack and jack stands. The exact procedure varies by kit, so always use the instructions supplied with the correct part number for your truck.
At a high level, the driveway installation includes:
- Park the truck on a stable, level surface and safely secure it.
- Raise the truck by the frame so the rear axle and leaf springs can hang freely.
- Assemble and position the RAS units on the factory leaf springs.
- Secure the system using the supplied hardware.
- Set the specified spring tension and tighten all hardware according to the instructions.
- Lower the truck, complete the final checks and take a test drive.
Before beginning, review the complete written instructions and the applicable installation video for your specific Tundra kit.
Install It Once. Leave It Alone.
Air-assisted suspension can provide adjustable support, but that adjustability also means the system has to be managed. Depending on the setup, owners may need to run air lines, install inflation valves or a compressor, check pressures and adjust the system for changing loads.
RoadActive Suspension takes a different approach. Once RAS is installed and properly tensioned, it remains engaged with the factory leaf springs and responds mechanically as the suspension moves. There is no pressure to check before a trip and no need to readjust the system when the truck goes from loaded to unloaded.
Bolt it on. Set it correctly. Let it work.
Does RAS Affect the Tundra’s Unloaded Ride?
This is an important question for a truck that may tow or haul on the weekend but spend the rest of the week unloaded.
Because RAS is progressive, it does not rely on a fixed block, rigid contact point or permanently stiffened leaf pack. The system provides increasing support as the suspension compresses and the load demands more from it. When the truck is unloaded, owners can expect the ride to remain similar to stock or feel more controlled.
That makes RAS particularly useful for Tundra owners who need better load handling without sacrificing the way the truck drives the rest of the time.
Is This the Right Tundra Suspension Upgrade for You?
RAS is a strong fit if you want to:
- Reduce rear squat from trailer tongue weight or bed cargo
- Improve stability and control while towing
- Reduce sway, body roll and excessive bounce
- Maintain comfortable unloaded drivability
- Complete the installation yourself
- Avoid air lines, compressors and ongoing pressure adjustments
- Keep the factory leaf springs and return the truck to stock if needed
It is designed for the owner who wants one mechanical system that improves both load support and road handling—without adding another system to manage.
Ready to Upgrade Your Toyota Tundra?
Give your Tundra’s factory leaf springs the support and control they are missing with a suspension upgrade you can install in your own driveway.
Frequently Asked Questions
Can I install RoadActive Suspension on my Toyota Tundra myself?
Yes. RAS is designed as a bolt-on DIY suspension upgrade. Most installations require basic hand tools, a jack and jack stands and take approximately 60–90 minutes. Follow the instructions supplied with the exact kit for your truck.
What Toyota Tundra model years does RAS fit?
The current RAS Toyota Tundra application fits 1999–2021 models equipped with rear leaf springs. It does not fit the coil-spring rear suspension used on 2022 and newer Tundras.
Will RAS help reduce Toyota Tundra squat?
Yes. RAS strengthens and stabilizes the factory leaf springs and can reduce rear squat by up to approximately 2 inches, depending on the vehicle, load and installation setting.
Can RAS help with sway and bounce while towing?
RAS is designed to reduce excessive sway, body roll, bounce and rebound by adding progressive support and control to the factory rear leaf springs.
Does RAS require air lines or a compressor?
No. RoadActive Suspension is fully mechanical. There are no air bags, air lines, compressors or pressure adjustments.
Do I have to readjust RAS when the load changes?
No. After the system is properly installed and tensioned, it automatically responds as the suspension moves and the load changes. It is designed to remain on the truck without ongoing adjustments.
Does RoadActive Suspension increase payload capacity?
No. RAS does not change the Toyota Tundra’s factory payload capacity or GVWR. It helps the existing suspension support and control loads that remain within the manufacturer’s ratings.
Will RAS make my unloaded Tundra ride harsh?
RAS is progressive and is designed to maintain or improve unloaded ride quality while adding support as the suspension compresses under load.
Always follow the installation instructions supplied with your specific RAS part number. RoadActive Suspension does not increase the vehicle manufacturer’s payload capacity or GVWR.
