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So why Prius doesn't handle?

Discussion in 'Gen 3 Prius Accessories and Modifications' started by cyclopathic, Sep 5, 2014.

  1. cyclopathic

    cyclopathic Senior Member

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    worry not you'd be left behind every time!
     
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  2. robertmaria

    robertmaria Member

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    i think my prius handles GREAT !!! maybe itz because of the frame flex? my tires are at 44psi and totally stock suspension. i weigh 250, add another 250 for passengers.my Pc1 car handles great in torrential rain, switchbacks, volcanicmud, dry roads etc.
     
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  3. Pridoogv5

    Pridoogv5 New Member

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    I just have to laugh at threads like this, where someone wants to make a Prius into a sports car. Please. It's like anything...you buy the right tool for the job. The Prius is the right tool for its intended purpose and it's success at fulfilling that purpose is evidenced by the huge sales success and the fact that the Prius is synonymous globally with very reliable and successful high mileage cars. If you want a Subaru WRX, go buy one. ;-)

    BTW, how does anyone consider the Prius as having a high center of gravity with the engine and battery array in the low positions they are in?
     
    #23 Pridoogv5, Sep 24, 2014
    Last edited: Sep 24, 2014
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  4. GrumpyCabbie

    GrumpyCabbie Senior Member

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    So why doesn't the Prius handle?

    Why doesn't a Ferrari get great fuel economy?
     
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  5. lar.smith42

    lar.smith42 Active Member

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    I totally agree !!! My 2010 Prius ll handles great at 75 t0 80 mph on the interstate highways around here. Handles well on 2 lane curvy roads as well. Steering is tight and feels normal. Handles much better than the Honda CRV we traded in. If yours is not handling good it would probably
    a good idea to get it fixed before adding a lot of suspension mods.
     
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  6. cyclopathic

    cyclopathic Senior Member

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    It is my understanding that Hybrid Mazda 3 has better MPG then Gen III and handles better. And let's not forget Lexus ct200h. Either of them is not a sports car.

    Is "handle like cr@p" part of the Prius image? Or Toyota would really loose money if they were selling better handling car?
     
    #26 cyclopathic, Oct 1, 2014
    Last edited: Oct 1, 2014
  7. GrumpyCabbie

    GrumpyCabbie Senior Member

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    For all the people out there who like a tight handling car there are just as many who want a softer, more comfortable ride. Mazda aim for one of those markets and Toyota the other. You should try living in Europe. Every bleeding car has 'sporty' suspension which just means they ride harder and you feel every bump in the road. Toyota is a breath of fresh air with their lighter steering and softer suspension.

    If you spend a couple hours a day in a car for a commute and you're a young, stress head middle manager then a sporty car is for you. If you work in your car and spend 10-12 hours a day in it, or you're older and wiser or just want a relaxing drive, then a Prius is fine.

    But, and I've said this many times before. A crap driver can make a fast car go fast. A good driver can make a slow car go fast. So the Prius may not handle well, but it depends on the driver to get the best out it :whistle:
     
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  8. cyclopathic

    cyclopathic Senior Member

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    @GrumpyCabbie

    I think it wasn't clear from initial post; we just came from coast to coast trip. 8600mi in 22 days, you do the math. Car has 160,000mi in 5 years so in terms of total number of hours spent behind the wheel can't be too behind of yours. And I might be actually older then you? irreguardless this is not really relevant.

    New Hybrid Accord outsold Prius in California, why? does it cost less? more reliable? cheaper to maintain? has more boot space? no no no and no. It just happen to handle better. And not b/c it has teeth rattling suspension, it has a nice plush ride we 'mercans seem to like most in our cars. It is a mostly misconception that soft suspended car can't handle and stiffer suspension = better handling. If later was true we wouldn't need any suspension at all.

    And the last but not least, the OP wasn't "Why someone would wanna better handling car?" or "should someone who likes better handling cars buy Prius" but rather "What are the technical reasons Prius does not handle well?". If you think that Gen3 handling is fine as it is, well that it is fine as it is for YOU there isn't any issue with this. But it isn't really relevant to this discussion.

    BUT if you wanna discuss toe-in, caster, camber or talk about Ackerman effect, please!

    @robertmaria

    You seem to be taking it personally; almost as "someone told you that your beautiful new GF snores in sleep".

    First of all you are NOT driving Gen3, you are an owner of "C", correct? Not to disappoint you but my impression from 15min "C" test drive that it handles alot better then Gen3. I would have been happy if Gen3 handle as good and I really liked the dashboard layout. What stopped me from buying one was the lack of space and rediculous piece of foam in trunk.
     
    #28 cyclopathic, Oct 1, 2014
    Last edited: Oct 1, 2014
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  9. zhenya

    zhenya Active Member

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    I'm not sure I've seen those sales numbers, but if the hybrid Accord out-sold the Prius, it's likely because the Accord is brand new and the Gen III Prius is now in its 6th model year. Also, historically sedans far outsell any other type of car, so I'm sure there is pent-up demand for a decent hybrid one.

    Don't let the marketing or EPA numbers fool you. Look at the real-world reports on places like Fuelly and FuelEconomy.gov. No hybrid other than the Prius reliably turns out EPA or better numbers in the hands of real owners.
     
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  10. cipsaz187

    cipsaz187 Member

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    The Hybrid Accord does pretty well with an average 45 mpg according to fuelly. The Accord basic msrp starts at $29K where Prius at $24K. Sort of a difference if you ask me.
     
  11. Grren4ever

    Grren4ever Active Member

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    I often ride in my best buddy's Lexus IS350 w/sport package. It has 18 inch rims w/40 series sidewall and is lower than my car. You'd expect his car to ride harsher with the suspension setup and lower profile wheels - his car can out-corner my car in an instant. Amazing thing is his ride is more comfortable than my Prius even though he is lower to the ground, and has a smaller sidewall. Bumps on the road feel like nothing in his vehicle (it's also significantly quieter too but that is expected with a Lexus).

    Of course comparing my Prius to his IS350 is like comparing an apple to a watermelon but damn....You can go low, run large tires and be comfortable too as long as the car was designed for it. Look at the Tesla Model S. 20 inch rims, w/ground hugging suspension. Ride inside is not harsh at all.

    I would love to own a Tesla model S before retirement... but for now, my Prius will do.
     
  12. robertmaria

    robertmaria Member

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    @cyclopathic : my who? snores? hahaha,,, itz always personal.
    my problem with my c is that it has no dig out,,, i like to turn at almost full speed and the car has no power to dig out of the turn. now i grant you i am doing this at 25mph on my volcano streets but i need the dig out to kinda settle me into the next venue from my turn. i have no racing background so i dont know an over from an understeer but i like to gun it in my turns to shoot like a rocket using that beyouuutiful instantaneous electric torque. itza great little go-kart.
    as for suspension i still want to RAISE the c about an inch HIGHER.
    oh yeah 25 mph is full speed because the speed limit here is 25mph in Hawaii (on suburban streets)
     
  13. cyclopathic

    cyclopathic Senior Member

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    Not looking into details but I'd guess the IS350 ride quality is due to better quality shocks. In the past I've gutted and replaced shocks on a few bikes, and it is amazing how much properly setup multivalved shocks will transfer ride with the same OEM springs.

    Unfortunately, on Prius your either have to settle for KYB ExcelGs, or pay extra $$$$ for true performance shocks. The choice is limited.

    Rear torsion beam suspension isn't in the same league as multilink used in Lexus, but Prius has issues with front more than rear, and both Lexus and Prius have similar McPherson set up. So the difference in handling is due to the set up/tuning, not some inherit design flow, IMHO
     
  14. lester williams

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    For sure, ''Cyclopathic'' does have a valid point on his take of the handling. I have added 215-55-16'' tires [ and new wheels ], TRD sway bar, Cusco front and middle braces, and a Cusco STB to get mine where I wanted it. It now handles on par with my past two RX350'S, and I can live with it as is. I added this stuff incrementally, deciding the next step was necessary, and stopped at the STB---which brought it all together. Great little car now, I will see if I can get 300,00 miles from it. The good news is that my fuel bill is slashed in 1/2, helping pay for all this. [ and still $18,000 less than a RX350 ]
     
  15. Grren4ever

    Grren4ever Active Member

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    I wonder if those high quality RS*R coilovers will allow for high levels of comfort and performance with the Prius. I'd love to try a set after my Tanabe's wear out. My tanabe's costed 900$, those RS*R's cost $1700
     
  16. robertmaria

    robertmaria Member

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    so
    ,,, i NEED to raise my car up about one inch,,, we have LAVA all over the road in Pahoa,,, after it cools a bit it is still hot,,, hahaha, anyway i must lift my car up about one inch,,,, is this so difficult or expensive ?!?
     
  17. cyclopathic

    cyclopathic Senior Member

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    sound like your car is close to what is mine; I have Tanabe STB/front underbrace and TRD xB swaybar (when I got it Prius-specific was not available yet). No lowering springs, b/c too it's been take to places where clearance would be an issue and still riding on OEM 195/65 15" rims as we need the MPG.

    Prior to my X-country trip I fitted rear Excel-Gs, and while they improved ride as they absorb bumps better and seem to reduce body roll, the improvements were marginal, so I decided not to replace front struts.

    As is car handled good; or so I thought before we got to some nice mountain roads in Cascades & Rockies. Then in tight switchbacks the ugly understeer became obvious again. Numb feel and lack of front grip on anything requiring turning steering wheel past 30deg off center.

    The latest "mod" was to install chamber kit and set front negative camber and toe-out.. This definitely improved handling and steering feel. On low grip LRRs car is able to go through 90deg neighborhood turns w/o plowing, while maintaining 25MPH speed limit. Prius is alot better balanced, and while it hasn't been taken to mountains (will not be driving to west coast anytime soon) on local twisty it can go ~10mph faster on the same tires. Something which required slowing down to ~35-40mph can be taken at 45-50. More impotently you can actually feel what is going on, not worry about car going wide, and induce and control slides.

    Camber kit is another add to my "Prius recommended suspension mod" list, and at $20 it is by far the cheapest one too ;)
     
  18. cyclopathic

    cyclopathic Senior Member

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    take a look at coil spring spacers, something like this:
    Coil Spring Isolators and Spacers - Free Shipping on Orders Over $99 at Summit Racing
    Prothane - Coil Spring Spacers - JCWhitney
    Daystar Part daykt09117bk - ComfortRide 1 Inch Front Leveling Kit - 4 Wheel Parts

    Not sure for fitment you'll have to research which one is right for your "C".

    You'd also need a mechanic who will agree to install it for you and not to say how big cuckoo are you every few seconds. In addition you'd need a camber kit for front and wheel alignment by named above mechanic who will set camber/toe to what you'd ask him to.

    Alternatively you can look into getting coilovers, they may allow to jack the car good luck.
     
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  19. robertmaria

    robertmaria Member

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    thank you,,, i will check all that out.
     
  20. Dylan Doxey

    Dylan Doxey Senior Member

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    I don't think upgrades for good handling fully qualifies as "turning a Prius into a sports car."

    For me, the point is that braking for turns is a waste of energy. It wastes the energy that you invested in achieving your momentum, which is followed by an additional expenditure of energy to regain your initial state of momentum. (The regenerative braking likely recovers no more than 30%.) Additionally, it is unavoidable that the turn itself absorbs momentum and also costs you energy.

    There are a couple options for minimizing this waste:
    a. don't drive to destinations that require turns
    b. don't drive any faster than you can take your next turn.

    I prefer the latter option. However, I am unwilling to drive around at 15 to 20 MPH hour all the time because that is impractical and it annoys other drivers who are sharing the road.

    Therefore, I would like to increase the speed that I can safely use when making a turn. That requires making some upgrades to the suspension that Toyota probably didn't bother with, to minimize weight and manufacturing costs.

    Adding the rear TRD swaybar made a big difference. But the front end still has too much sway, and the front suspension compresses too much and allows the front wheels rub on hard cornering. Perhaps it's time to look into an aftermarket swaybar for the font. Perhaps I should also be considering a set of stiffer springs.