Help. Instability on highway - Toyota Yaris Forums

ibizagti · 07-13-2009, 03:42 AM

Hello from Spain.

I´ve a '08 Yaris D4D with 6x16" rims (from a Corolla TS) and 195-50-16 tyres (Toyo Proxes T1R). Stock suspension.

The problem is that in highway driving over 60millas, the car is very hard to keep straight. It affects the state of the road, wind and even the air to the advancement of other cars. It is very uncomfortable.

Do you think that putting Eibach springs with stock shocks will be better?
What alignment should be better for highway?

Thanks very much!!

PD: this is my car

JustAnotherAsian · 07-13-2009, 04:48 AM

assuming you're still on stock/oem suspension, a straight oem-spec alignment is best for the highway. make sure to get well within specs for toe especially.

a bad tire+wheel balance would contribute less to your problems, but i'd check that too.

ibizagti · 07-13-2009, 04:53 AM

Yes, I have oem suspension.

The weight of my 16" are the same of the oem in 15".

The car is only 25.000kms (about 15K miles)

Thanks!

JustAnotherAsian · 07-13-2009, 04:58 AM

Quote:

Originally Posted by ibizagti

Yes, I have oem suspension.

The weight of my 16" are the same of the oem in 15".

The car is only 25.000kms (about 15K miles)

Thanks!

yes. start with the alignment first. it's relatively inexpensive considering it affects so many variables, including tire wear.

Altitude · 07-13-2009, 01:38 PM

TRD rear sway bar. End of story.

*kimona* · 07-13-2009, 01:43 PM

I don't think there is anything wrong with your Yaris that we haven't all experienced at highway speeds.

TheRealEnth · 07-13-2009, 02:51 PM

Drop the car, add a bar, it helps lots

Lewis · 07-13-2009, 03:05 PM

the TRD rear bar helped my car's stability very much on the highway- with everything else stock

ibizagti · 07-13-2009, 04:20 PM

Yes, I think that TRD sway bar will help me. Tomorrow will pay a new one from ebay... :D

Thanks!!!

cali yaris · 07-13-2009, 05:07 PM

Quote:

TRD rear sway bar. End of story.

extra chapter to the story: Ultra Racing sway bar for $30 less.

Tamago · 07-13-2009, 06:15 PM

check your tire pressures. virtually free.

also, if you DO opt for an alignment, have the tech err on the side of toe-in up front (while still maintaining factory specs) if you want the car to handle better at higher speeds.

ibizagti · 07-14-2009, 02:47 AM

I was running 38psi in front and 36 rear. (in other cars usually have this tyre pressures and all ok)

Few weeks ago, I put 29psi rear and front and the car goes a little better.

Thanks very much!

yaris 2sz · 07-14-2009, 02:58 AM

put 32psi and the springs.

MUSKOKA800 · 07-14-2009, 10:53 AM

Quote:

Originally Posted by Altitude

TRD rear sway bar. End of story.

My thought exactly.
It makes a world of difference (huge stability and handling improvement).

ibizagti · 07-16-2009, 07:37 AM

Hello guys!

Finally, I bought an Ultra Racing Rear Sway Bar (19mm) and a set of rear hub spacers (10mm)

When I install them, I told you the results :D

Thanks!!

07-13-2009, 03:42 AM	#1
ibizagti Drives: Yaris 5door D4D Join Date: Jan 2009 Location: Spain Posts: 12	Help. Instability on highway Hello from Spain. I´ve a '08 Yaris D4D with 6x16" rims (from a Corolla TS) and 195-50-16 tyres (Toyo Proxes T1R). Stock suspension. The problem is that in highway driving over 60millas, the car is very hard to keep straight. It affects the state of the road, wind and even the air to the advancement of other cars. It is very uncomfortable. Do you think that putting Eibach springs with stock shocks will be better? What alignment should be better for highway? Thanks very much!! PD: this is my car

07-13-2009, 04:48 AM	#2
JustAnotherAsian now in HD Drives: not yaris! Join Date: Jul 2006 Location: milpitas / santa rosa Posts: 221	assuming you're still on stock/oem suspension, a straight oem-spec alignment is best for the highway. make sure to get well within specs for toe especially. a bad tire+wheel balance would contribute less to your problems, but i'd check that too. __________________

07-13-2009, 02:51 PM	#7
TheRealEnth Beast View User's Garage Drives: 2007 Blz Blu LB Join Date: Oct 2008 Location: Miami, FL Posts: 1,365	Drop the car, add a bar, it helps lots __________________ One you've taken a yaris for a spin, there's no turning back. Its a Chao!!!

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07-13-2009, 04:53 AM	#3
ibizagti Drives: Yaris 5door D4D Join Date: Jan 2009 Location: Spain Posts: 12	Yes, I have oem suspension. The weight of my 16" are the same of the oem in 15". The car is only 25.000kms (about 15K miles) Thanks!

07-13-2009, 01:38 PM	#5
Altitude Drives: '08 LB MT Bayou Join Date: Oct 2008 Location: Colorado Posts: 1,671	TRD rear sway bar. End of story.

07-13-2009, 01:43 PM	#6
kimona Super Moderator Drives: 2014 White VITZ Join Date: May 2007 Location: Huntington Bch, CA Posts: 4,938	I don't think there is anything wrong with your Yaris that we haven't all experienced at highway speeds.

07-13-2009, 03:05 PM	#8
Lewis Our off road vehicle Drives: 2009 Yaris 3dr Join Date: Apr 2009 Location: NJ Posts: 198	the TRD rear bar helped my car's stability very much on the highway- with everything else stock

07-13-2009, 04:20 PM	#9
ibizagti Drives: Yaris 5door D4D Join Date: Jan 2009 Location: Spain Posts: 12	Yes, I think that TRD sway bar will help me. Tomorrow will pay a new one from ebay... :D Thanks!!!

07-14-2009, 02:47 AM	#12
ibizagti Drives: Yaris 5door D4D Join Date: Jan 2009 Location: Spain Posts: 12	I was running 38psi in front and 36 rear. (in other cars usually have this tyre pressures and all ok) Few weeks ago, I put 29psi rear and front and the car goes a little better. Thanks very much!

07-14-2009, 02:58 AM	#13
yaris 2sz www.yarisclub.gr Drives: yaris 1.3 2sz - 1.33 1nr Join Date: Jan 2009 Location: greece Posts: 199	put 32psi and the springs.

07-16-2009, 07:37 AM	#15
ibizagti Drives: Yaris 5door D4D Join Date: Jan 2009 Location: Spain Posts: 12	Hello guys! Finally, I bought an Ultra Racing Rear Sway Bar (19mm) and a set of rear hub spacers (10mm) When I install them, I told you the results :D Thanks!!