TRD Plus Rear Sway Bar

Discussion in 'Gen 3 Prius Accessories and Modifications' started by teamsc10190, May 5, 2013.

  1. teamsc10190

    teamsc10190 Stereo Prii (2011 and 2006)

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    Just completed the install of a TRD Plus Rear Sway Bar p/n: PTR11-47010 this morning and can advise the install is a straight-forward bolt-on (under an hour) that yields tremendous bang for the buck. Best $224 I've spent on the car IMO.

    If you had only one thing to do to improve the vague, flaccid handling of a Gen III Prius; this would be the place to start. The next stage will cost a disproportionate amount for diminished return.

    By the way: I was surprised to find the stock rear shocks are nitrogen gas.
     
  2. Spaz

    Spaz Junior Member

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    Just out of curiosity, what other suspension mods do you have? Im debating whether or not to play with sway bars and stuff but Idk if it's worth it for where I'm at now
     
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  3. teamsc10190

    teamsc10190 Stereo Prii (2011 and 2006)

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    The rear sway bar is my only suspension mod to date. I had a discussion with the TRD engineer who developed the Prius Plus performance components and asked what he thought would offer the maximum performance benefit for the least investment, and rear sway bar was his immediate response.
     
  4. xpcman

    xpcman Senior Member

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    My comments exactly - the best bang for the buck. I can't understand why Toyota didn't just design in the same rigidity in the rear axle. Also the rear sway bar is "made in: USA of domestic materials".
     
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  5. ockevin

    ockevin Active Member

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    I love my rear sway bar and lowering springs from trd...my car handles great. Don't forget to lick up a Rude person's front. Chassis brace.
     
  6. peterjmc

    peterjmc Ping pong in Ding Dang...

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    I have the Tanabe strut tower brace, both Cusco front braces, Cusco mid brace, and lowered on Eibachs. I added a Hotchkis rear swaybar and I did feel a significant difference in turn in and handling. It was more responsive to steering inputs and the car feels even flatter in the turns.

    I would assume that you would have a similar experience if you added a rear sway bar based on your mod list in your sig.

    The only difference between my setup and the OPs is that the TRD bar utilizes endlinks, where the Hotchkis mounts to the strut assembly.
     
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  7. teamsc10190

    teamsc10190 Stereo Prii (2011 and 2006)

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    The TRD Prius Plus accessories are local developments of the U.S. importer.
     
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  8. Sfcyclist

    Sfcyclist Senior Member

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    interesting.. as I would think the Plus springs would have a bigger improvement than sway. So far, it's been great!
     
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  9. teamsc10190

    teamsc10190 Stereo Prii (2011 and 2006)

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    Looks like you and the man who developed the Prius Plus parts are on the same page.:)
     
  10. BigPete

    BigPete Member

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    My chassis/suspension upgrades were as follows in this order below. Basically started off with the cheapest first and then got a bug! Luckily my Prius is a limited edition here in UK, it came with the bodykit and wheels and interior leather etc so is a great start to modding!

    1) Ultrabrace lower centre brace off eBay.
    2) Tanabe lower front brace (changing to Rude person's as Tanabe too low to floor for lowered ride)
    3) Cusco strut brace (bought 2nd hand)
    4) H&R lowering springs

    At every stage I have noticed improvements over the last upgrade but even with the stiffer springs there is still a noticeable sway if you push the car around corners.

    I agree with a previous post if you want less sway a rear anti sway is the way forward rather than lowering springs, but that is what an anti sway is for!

    I intend to get a rear anti sway sooner rather than later and then I'm sure the car will improve even more. image.jpg
     
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  11. Sfcyclist

    Sfcyclist Senior Member

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    I assume you upgraded from 15" wheels already?
     
  12. teamsc10190

    teamsc10190 Stereo Prii (2011 and 2006)

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    No; stock wheels and tires. I didn't feel the ride, fuel economy, loss of load carrying capacity, and cost consequences could be justified for a commuter car.
     
  13. Sfcyclist

    Sfcyclist Senior Member

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    Speaking from experience, for stability and overall handling improvement, plus sizing on tires/wheels combo makes the biggest impact. Sequence should be tires/wheels then suspension. I think the stock Persona handled quite well as it's has 17" wheels. I read a lot of instability/poor handling complaints by Gen3 owners... the only difference, the 17" wheels.
     
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  14. Ken Blake

    Ken Blake Active Member

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    Plus size wheels are also the single biggest thing you can do to make your ride a LOT rougher.
     
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  15. teamsc10190

    teamsc10190 Stereo Prii (2011 and 2006)

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    That's a key reason why I didn't consider going there. IMO the stock suspension provides compromised ride quality that would not be improved with addition of low profile tires.

    No question having less compliant sidewalls provides improved handling response, but diminished ride quality is an unavoidable compromise. In my view the potential return on investment for Plus sizing has everything to do with the basic capabilities of the car's suspension, and the Prius suspension is, (how to say it for an enthusiast audience?), .... basic.
     
  16. Ken Blake

    Ken Blake Active Member

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    The less compliant sidewalls DO improve turn-in. The larger diameter wheels increase the unsprung weight, the rotational mass that the car has to accelerate and brake, and move that mass away from the center of rotation, making it that much more difficult to accelerate and brake that mass.

    The mid Ultrabrace helped a lot with the chassis flex, and the TRD lowering springs gave a somewhat firmer ride, while eliminating the "TRD OffRoad Suspension" look that the stock springs give. I'll probably add a strut tower brace and the front underbraces from Rude person's at some point. I'm on the fence about the TRD bodykit. I've read that it DOES improve the car's aerodynamics...
     
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  17. Sfcyclist

    Sfcyclist Senior Member

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    My question if OP swapped wheels was due to his comment, "If you had only one thing to do to improve the vague, flaccid handling of a Gen III Prius; this would be the place to start."

    Reading that statement alone, I disagree and would say improving contact patch thus the Plus wheel size suggestion.. but OP never noted that. that's what great about customizing.. everyone can do it their way to meet their own requirement.
     
  18. teamsc10190

    teamsc10190 Stereo Prii (2011 and 2006)

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    OP's next sentence was: "The next stage will cost a disproportionate amount for diminished return."

    Sway bar total investment = $224

    Plus wheel size investment = $1,000 - $1,500, diminished ride quality and a 3-4 MPG hit on fuel economy.

    I'm coming up on making a decision on tire replacement at 36K, and the opportunity comes to consider going plus 1 on the tires from the stock P195/65 R15 to a wider/stickier 205/60 R15 that would be the cheapest route to an improved contact patch while maintaining the stylish plastic wheel covers.:) The costs to be considered include diminished ride quality, loss of fuel economy, and diminished load carrying capacity.

    At the end of the day, the decision will come down to the key reason I own a Prius: it's an efficient commuter car.

     
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  19. Sfcyclist

    Sfcyclist Senior Member

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    That's the subjective part, the "return". It's just preference really.. unless you're doing lap time around Laguna Seca, I don't really see a "return" with any of the handling upgrades. Only goal I see here is improving the drive experience That to me is hard to put a dollar amount on.

    For me, not monetary return but I enjoyment is improved in 2 areas, aesthetics and handling. I would go as far to say I would not have bought a Prius if it wasn't for how it looks.
     
  20. Eclipse1701d

    Eclipse1701d Prius Enthusiast

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    Just reading through the previous posts... I have a Persona that included the Sports Appearence package. Forged 17's, Toyo Tires and the TRD Gorund Effects kit. I love the car, but it did not look right. It looked like I could curl up and take a nap in the wheel well!

    SO... I just got back from having the TRD Spings and Anti-Sway Bar installed. I have to say that I agree with Sfcyclist. I added the additional components because I enjoy a firmer ride. I am definately happier with the way the car feels. I also got 3mpg more on the way back from the dealership... Maybe lowering the car helped? Not likely? I'll let you guys know how the mpg's go...

    Either way, better or worse, I haven't done any mods to a car in over 20 years and it feels good to have some fun again!

    Even if its tamed fun as I Pulse and Glide my lowered Prius!
     
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