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2013 Hyundai Sonata - Caster at low end of Spec Range



 
 
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  #1  
Old August 9th 16, 02:42 AM posted to rec.autos.tech
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Default 2013 Hyundai Sonata - Caster at low end of Spec Range

2013 Hyundai Sonata - Caster at low end of Spec Range:


For this generation of Sonatas(YF 2011 - 14) Caster is specified
as +4.4deg, + or - 0.5deg.

Mine: L = +3.8, R = +3.9


Question, since caster on my car is nearly dead equal, but
is barely at the low end of specified range, #1 how did it check
in that low, and #2 is there anything that can be repaired, bent,
or replaced to get it up into the middle of that range?


Thanks in advance. And yes, I know in *theory* caster and
camber cannot be adjusted on a unibody where they are
defined by locations of control arms and built in strut tower
angles. But is there any way to 'cheat' and add more caster
without throwing the other angles off?
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  #2  
Old August 9th 16, 02:51 AM posted to rec.autos.tech
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Default 2013 Hyundai Sonata - Caster at low end of Spec Range

On 8/8/2016 8:42 PM, wrote:
> And yes, I know in *theory* caster and
> camber cannot be adjusted on a unibody where they are
> defined by locations of control arms and built in strut tower
> angles.


Camber IS adjustable.
  #3  
Old August 9th 16, 02:55 AM posted to rec.autos.tech
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Default 2013 Hyundai Sonata - Caster at low end of Spec Range

.. you are correct:

On that generation Sonata, rear camber is adjustable. I already
had rear camber made less negative, from -1.4 to -0.8deg.

Now I'm trying to find out why my Sonata has barely the minimum
spec caster, and what if anything needs repair or replacement
to gain a half degree back.
  #6  
Old August 9th 16, 02:53 PM posted to rec.autos.tech
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Default 2013 Hyundai Sonata - Caster at low end of Spec Range

Bill Vanek wrote: "Why would you want to bother with this? There is no
effect on tire wear, and even another degree of caster will have almost
no effect on feel. It's a waste of time to even think about it. "


Simply because my caster is at the bottom of the
specified range. And of all the alignment parameters,
caster is the most important to me, and it sucks that
that particular spec is at the lower end. If it was
between 4.3-4.7 degrees positive, this thread would
not exist.
  #7  
Old August 9th 16, 08:44 PM posted to rec.autos.tech
dsi1[_11_]
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Posts: 331
Default 2013 Hyundai Sonata - Caster at low end of Spec Range

On Monday, August 8, 2016 at 3:42:06 PM UTC-10, wrote:
> 2013 Hyundai Sonata - Caster at low end of Spec Range:
>
>
> For this generation of Sonatas(YF 2011 - 14) Caster is specified
> as +4.4deg, + or - 0.5deg.
>
> Mine: L = +3.8, R = +3.9
>
>
> Question, since caster on my car is nearly dead equal, but
> is barely at the low end of specified range, #1 how did it check
> in that low, and #2 is there anything that can be repaired, bent,
> or replaced to get it up into the middle of that range?
>
>
> Thanks in advance. And yes, I know in *theory* caster and
> camber cannot be adjusted on a unibody where they are
> defined by locations of control arms and built in strut tower
> angles. But is there any way to 'cheat' and add more caster
> without throwing the other angles off?


This is why you should never check the specs on the alignment. If the tires are wearing fine and it handles like it's supposed to, there's no need to check it out.

My front
  #8  
Old August 9th 16, 08:48 PM posted to rec.autos.tech
dsi1[_11_]
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Posts: 331
Default 2013 Hyundai Sonata - Caster at low end of Spec Range

On Monday, August 8, 2016 at 3:42:06 PM UTC-10, wrote:
> 2013 Hyundai Sonata - Caster at low end of Spec Range:
>
>
> For this generation of Sonatas(YF 2011 - 14) Caster is specified
> as +4.4deg, + or - 0.5deg.
>
> Mine: L = +3.8, R = +3.9
>
>
> Question, since caster on my car is nearly dead equal, but
> is barely at the low end of specified range, #1 how did it check
> in that low, and #2 is there anything that can be repaired, bent,
> or replaced to get it up into the middle of that range?
>
>
> Thanks in advance. And yes, I know in *theory* caster and
> camber cannot be adjusted on a unibody where they are
> defined by locations of control arms and built in strut tower
> angles. But is there any way to 'cheat' and add more caster
> without throwing the other angles off?


This is why you should never check the specs on the alignment. If the tires are wearing fine and it handles like it's supposed to, there's no need to check it out.

The front end of my VW needs to have the suspension parts changed. My tires are wearing on the inside and outside edges. I sure wish I had your problem.
  #9  
Old August 10th 16, 12:49 AM posted to rec.autos.tech
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Default 2013 Hyundai Sonata - Caster at low end of Spec Range

dsi1:

Look up online "2011 Hyundai Sonata wandering" and you'll
understand why the concern. Although most of the issues
were resolved by the third model year of the YF body Sonata,
it is still good to havr alignment checked, especially on a
used one with 30,000 miles.

Another contributor to the wandering was the electric power
steering and what mode it was set in at the factory. Mine was
set to 'Soft'(maximum boost, minimum driver effort). I had my
dealer set it to 'Sport'(minimum boost, most driver effort needed
to steer car). In soft, even slight changes to the road angle, or
a mild cross wind, would wrest the wheel from drivers' hands!
It was reminiscent of the 70s 'one fingered' steering on
full size models.


Sport mode was a huge step in normalizing the handling/road
feel of my Sonata, but I figured finding a way to maximize
caster - within specs - would really ice the cake.
  #10  
Old August 10th 16, 11:01 PM posted to rec.autos.tech
dsi1[_11_]
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Posts: 331
Default 2013 Hyundai Sonata - Caster at low end of Spec Range

On Tuesday, August 9, 2016 at 1:49:28 PM UTC-10, wrote:
> dsi1:
>
> Look up online "2011 Hyundai Sonata wandering" and you'll
> understand why the concern. Although most of the issues
> were resolved by the third model year of the YF body Sonata,
> it is still good to havr alignment checked, especially on a
> used one with 30,000 miles.
>
> Another contributor to the wandering was the electric power
> steering and what mode it was set in at the factory. Mine was
> set to 'Soft'(maximum boost, minimum driver effort). I had my
> dealer set it to 'Sport'(minimum boost, most driver effort needed
> to steer car). In soft, even slight changes to the road angle, or
> a mild cross wind, would wrest the wheel from drivers' hands!
> It was reminiscent of the 70s 'one fingered' steering on
> full size models.
>
>
> Sport mode was a huge step in normalizing the handling/road
> feel of my Sonata, but I figured finding a way to maximize
> caster - within specs - would really ice the cake.


Just tell the alignment guy your problem and he'll probably just change the toe-im. I don't know if they'll be in spec but that should improve straight line stability. The young alignment guy might not want to do it so find the oldest, most ornery-looking coot in the shop and ask him. The price you pay will be increased tire wear.
 




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