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#21
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2013 Hyundai Sonata - Caster at low end of Spec Range
Bill Vanek: Tires on car all match original size, load, and speed ratings on B-pillar decal. I'm running them at just 2psi over spec, which should not be a big deal, compared to some of my friends cars, which differ 5-10psi from one corner to the next, LOL. The rears are moderately worn Khumo Solus KH's - what Hyundai and Kia seem to put on all of their cars at factory. The fronts are newer Nexens, an upgrade available at all Hyundai & Kia dealers for Sonata and the Optima. I definitely plan to replace them before this winter with higher consumer-rated Continentals. However: I have never, ever, felt a handling improvement from changing tires on any car I've owned. Alignment, and proper tire pressures have always been the biggest influence for me. |
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#22
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2013 Hyundai Sonata - Caster at low end of Spec Range
On Wednesday, August 10, 2016 at 6:17:20 PM UTC-10, Bill Vanek wrote:
> On Wed, 10 Aug 2016 20:21:33 -0700 (PDT), dsi1 <dsi1yahoo.com> > wrote: > > >On Wednesday, August 10, 2016 at 5:06:51 PM UTC-10, Bill Vanek wrote: > >> On Wed, 10 Aug 2016 19:55:50 -0700 (PDT), dsi1 <dsi1yahoo.com> > >> wrote: > >> > >> >On Wednesday, August 10, 2016 at 2:31:23 PM UTC-10, Bill Vanek wrote: > >> >> On Wed, 10 Aug 2016 15:01:08 -0700 (PDT), dsi1 <dsi1yahoo.com> > >> >> wrote: > >> >> > >> >> >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. > >> >> > >> >> Changing the toe will help only if it's so far off right now that the > >> >> car is wandering back and forth. The only things that affect steering > >> >> return to center are camber, caster, and kingpin inclination. > >> > > >> >I believe that the OP is experiencing wandering back and forth. > >> > >> He is, but in a subsequent post we can see that the toe is okay. He > >> does have a thrust angle issue - it's non-zero, but I don't know how > >> far off is too far off. > > > >If it wanders, doesn't that mean that the toe is not OK? > > Not if it measures okay. Crappy tires, road surface, loose/worn parts > - including in the rear, probably other things I'm forgetting, those > will cause it. Also, it it's the toe, the car will tend to jump around > side to side, and in small amounts, as opposed to just slowly drifting > back and forth. > > > You have to get an experienced alignment guy to adjust the toe-in based on the problem. The toe-in might not be to spec. If this is a common problem with these cars, then you'll have to go out of spec. Well that's my opinion anyway. If you're saying that he has to get the rear end squared away first well, yes, of course. I should have known that adjusting the toe-in is too simple a solution for this group. That's the breaks. |
#23
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2013 Hyundai Sonata - Caster at low end of Spec Range
dsi1:
The only toe adjustment with directional consequences is rear. Front is a tire wear matter, and steering wheel angle at straight ahead. |
#25
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2013 Hyundai Sonata - Caster at low end of Spec Rangel
Thanks Bill:
At least we've narrowed it down. I showed those kits to both dealers and they said all they are is a pile of bolts and washers, that 'additional hardware' is needed to adjust the front camber. And my local body shops said they won't touch the front camber without a 'kit'. The concensus here is that neither the dealers nor the outside body places know exactly what the F- is needed to adjust front camber on these Sonatas(2011-14). |
#26
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2013 Hyundai Sonata - Caster at low end of Spec Rangel
Thanks Bill:
At least we've narrowed it down. I showed those kits to both dealers and they said all they are is a pile of bolts and washers, that 'additional hardware' is needed to adjust the front camber. And my local body shops said they won't touch the front camber without a 'kit'. The concensus here is that neither the dealers nor the outside body places know exactly what the F- is needed to adjust front camber on these Sonatas(2011-14). |
#27
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2013 Hyundai Sonata - Caster at low end of Spec Rangel
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#28
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2013 Hyundai Sonata - Caster at low end of Spec Rangel
Bill Vanek wrote: "it always drift to the left? And how far does the car travel before it leaves the lane? " Drift: 70% left / 30% right. Also, it is slightly easier to steer left than to steer right. Conditions: Drift is dependent on crown/overall angle of roadway. Could be one eighth to one quarter mile before drifting across dotted line on a highway, at 60-65mph. If highway or local street is reasonably and consistently crowned, Sonata will go straight or slightly to the right. As soon as the road flattens out, it will slowly drift left, toward the dotted white or double yellow. I would really rather do the 'kit thang' as far as reducing front cross-camber is concerned, rather than the surgery you suggested. SOMEBODY out in Hyundai World must know what that front camber bolt kit consisted of, and could explain it to me and see if it still exists somewhere on planet Earth. :s |
#29
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2013 Hyundai Sonata - Caster at low end of Spec Rangel
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#30
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2013 Hyundai Sonata - Caster at low end of Spec Rangel
Bill Vanek wrote: "You can't use a kit without elongating the holes. There might be ball joints that will allow a camber/caster adjustment, though. " Not the case with Sonata YF(2011-14) series: A camber kit was required and was provided for front camber adj. It was analagous to a key that unlocked a safe or whatever. Some parts were bolted on to that part of the suspension that allowed for camber adjustment, and the adjustment was made. No drilling, no guessing. What remains unknown is which years of the YF series was the kit provided for. A check of my VIN by one of the dealer parts depts showed no kit available for my car. So it looks like some surgery might be necessary to equalize that front neg. camber and reduce cross-camber maybe to 0.2 or ..3 degrees. The local body shops said they are "adamantly" reluctant to do this on a recent car like my Sonata until all potentially worn/loose/or bent parts are diagnosed. I bought the car at 29,900 miles, and it now has about 30,500, still relatively new, and I want my investment to be something I want to jump in and drive every day to work, the supermarket, or wherever. |
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