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07-10-2017, 01:44 PM | #1 |
Scooby Newbie
Member#: 78476
Join Date: Dec 2004
Location: Seattle, WA
Vehicle:18 STI DGM |
Help. Brand new 18 STI – pulls to the right under acceleration
Hello! I just picked up my 18 STI yesterday. And I love it. Except one thing… The car seems to pull towards the right under acceleration. Doesn’t really matter the speed or road type. And it only happens while accelerating. The car/wheel will stay completely straight under braking or when cruising off the gas. But anytime the accelerator is applied, the car pulls to the right.
Please advise. Thanks in advance!
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07-10-2017, 01:48 PM | #2 | |
Scooby Specialist
Member#: 127099
Join Date: Sep 2006
Chapter/Region:
BAIC
Vehicle:02 IMPERZA WRX BLACK |
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07-10-2017, 02:13 PM | #3 |
NASIOC Supporter
Member#: 30669
Join Date: Dec 2002
Chapter/Region:
Tri-State
Location: USA, North NJ, 07456
Vehicle:1998 Legacy 2.5GT Silver Sleeper BK, 5MT |
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07-10-2017, 03:18 PM | #4 |
Scooby Guru
Member#: 21145
Join Date: Jul 2002
Chapter/Region:
NESIC
Location: Not in my own time
Vehicle:2002 Enemy of Aku |
Presuming this is still the same issue, ie; the factory hasn't changed anything:
Torque steer like this would occur due to the factory alignment settings. The Dealer will align to the Factory specs. Once you verify your tire pressures are correct, you may want to find a reputable alignment shop in your area and have the alignment checked and reset. Typical good alignment specs would be: -1* camber 0* toe maxout positive castor |
07-10-2017, 03:47 PM | #5 |
Scooby Guru
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:2016 STI |
mine pulls like hell when the tire pressure on a front wheel gets low, and it doesn't even need to be enough to trip the dash light.
But it pulls all the time, not just acceleration |
07-10-2017, 04:30 PM | #6 | |
Scooby Newbie
Member#: 78476
Join Date: Dec 2004
Location: Seattle, WA
Vehicle:18 STI DGM |
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07-10-2017, 05:12 PM | #7 | |
Scooby Specialist
Member#: 329822
Join Date: Aug 2012
Location: NorCal
Vehicle:2016 STi WRB |
Quote:
Yes check tire pressure for sure! I run 38psi cold in all wheels. But it's not tire pressure sounds like a alignment problem. Consider a good alignment shop that can make sure your camber is equal side to side and zero toe in all wheels. |
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07-10-2017, 07:27 PM | #8 |
Former Vendor
Member#: 423601
Join Date: Jun 2015
Chapter/Region:
NWIC
Location: Hillsboro,OR
Vehicle:2016 WRX LBP |
If the Tire pressure is good, then the belts in the a tire are bad and you need a new tire.
One way to test this is to rotate the tire to the back to see if it goes away, |
07-10-2017, 10:00 PM | #9 | |
Scooby Guru
Member#: 21145
Join Date: Jul 2002
Chapter/Region:
NESIC
Location: Not in my own time
Vehicle:2002 Enemy of Aku |
Quote:
Presuming nothing was wrong with the brakes, then it should not pull under braking |
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08-09-2017, 08:38 AM | #10 |
Scooby Newbie
Member#: 279061
Join Date: Apr 2011
Location: Cincinnati
Vehicle:2018 WRX STI Lapis Blue |
Mine did this when the tire pressure was off even after the dealer assured me they checked it. If thats not it then your tires are probably bad. Someone on youtube with an 18 STI had their tires replaced for this issue.
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08-09-2017, 01:51 PM | #11 |
Scooby Newbie
Member#: 472039
Join Date: Jul 2017
Chapter/Region:
TXIC
Location: Houston, Tx
Vehicle:2018 STi Limited LBP |
Yep, there are a set of defective tires going around on the early models. You'll know if you move the tire and the problem moves with it. They can check the serial # and determine if it was made in week 13 I think?
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08-09-2017, 02:08 PM | #12 | |
Scooby Guru
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:2016 STI |
Quote:
I know mine pulls 100% of the time if there's a pressure issue. I just had it for 10 days in a row from a leaky stem so every day the light would come on when I left work, but it would pull non stop. If yours is just under acceleration it's probably something else. |
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08-09-2017, 02:24 PM | #13 |
Scooby Newbie
Member#: 279061
Join Date: Apr 2011
Location: Cincinnati
Vehicle:2018 WRX STI Lapis Blue |
Mine pulled only under light acceleration with low pressure in one of the front tires. Is was not really that low though maybe 8-10lbs or so and did not trigger the tpms light.
Last edited by JJay03; 08-09-2017 at 02:33 PM. |
08-10-2017, 11:32 AM | #14 |
Scooby Newbie
Member#: 468095
Join Date: May 2017
Chapter/Region:
NESIC
Location: Boston, MA
Vehicle:2018 STI CWP |
You're not alone. My 18' STI was one of the early ones to hit New England and I have this same problem. Checked tire pressure and it's all good. Taking it back to dealer
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08-10-2017, 10:03 PM | #15 |
Scooby Newbie
Member#: 410838
Join Date: Jan 2015
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Might be week 13 production tires. If so, your dealer will replace them.
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08-10-2017, 10:57 PM | #16 |
Scooby Newbie
Member#: 331119
Join Date: Sep 2012
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Lift more weights with your left arm only - this will even it out.
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08-10-2017, 11:24 PM | #17 |
Scooby Newbie
Member#: 469091
Join Date: Jun 2017
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11-13-2017, 06:33 PM | #18 |
Scooby Newbie
Member#: 394682
Join Date: Jun 2014
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pulling
Just picked up my 2018 sti and mine is pulling to the left only when accelerating not flooring it just cruising but on the throttle. as soon as i just coast down a hill though it is straight as an arrow. i went to the dealer they did an alignment but it is still happening. Frustrated
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11-14-2017, 09:06 AM | #19 |
Scooby Guru
Member#: 21145
Join Date: Jul 2002
Chapter/Region:
NESIC
Location: Not in my own time
Vehicle:2002 Enemy of Aku |
Then take it back and tell them they didn't fix the problem.
That's what any reasonable person would with any shop. Tell them to keep the car until they fix it properly and to give you a free loaner. After all, it's under a new car warranty. |
11-17-2017, 06:56 AM | #20 |
Scooby Newbie
Member#: 474147
Join Date: Sep 2017
Location: Cincinnati, OH
Vehicle:2018 WRX STi WRB |
Same issue
I picked up my 2018 STi in early October and had the same issue. This will be long, but I want to share my full experience in detail to hopefully save other people time and energy of making multiple trips to the dealership. My car pulls to the left when under even the slightest bit of acceleration. Driving on the interstate I also notice the steering wheel is off center. I am turning the wheel about 5-10 degrees to the right to keep the car driving straight. I am sure some of this is caused by the crowing of the road, but I am always having to pull the steering wheel to the right. I can never just relax my arms and cruise on the high way I have to always be "driving" the car.
Took the car to the dealership 4 times. 1st visit to dealership - they double checked the alignment and it was out slightly but not a lot. The issue was still present. 2nd visit to dealership - This time the service manager went on a test drive with me. He also verified that he felt the issue (now I know I was not being paranoid). They swapped the two front wheels. The issue was still there but reversed this time. This means that the issue should be in the tire. They ordered two brand new yokohamas. 3rd visit to dealership - Replaced the two tires with the new ones they ordered. The issue is still there pulling right still. They ordered another two Yokohamas to replace all four tires now. 4th visit to dealership - Replaced rear two tires with new. The car now has all new tires. The issue has moved back to the left and feels almost exactly the way it did in the beginning. The dealership has told me they don't know what else could be causing the issue and they have done everything that they can under warranty to address the issue. I don't know if this is just the nature of the car or if these Yokohama tires are just complete crap. When I buy a 40k high performance car, I expect it to have precise steering. I am planning to buy some winter wheels and tires here soon and I will then see how the car drives after that. If this fixes the issue then I know that these tires are junk. That is my experience and I hope this helps anyone who is also having this issue. I love everything else about the car and am still very happy with my purchase, I just wish I didn't have to make so many trips to the dealership after buying a brand new car. |
11-17-2017, 08:11 AM | #21 |
Scooby Guru
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:2016 STI |
is anything different suspension wise on the 18's?
That must be it because my 16 tracks dead nuts. They were using Dunlop I believe for the stock tires in 16. Sportmaxxx I think they are. |
11-17-2017, 10:23 AM | #22 | |
Scooby Newbie
Member#: 477868
Join Date: Nov 2017
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Quote:
Here is my current situation. I am currently dealing with the same issues. I have 1k miles on it. It was pulling to the left, off centered steering wheel, pulled while accelerating, and had to hold the wheel to correct the pull the entire time so i took it in. They had the car for 3 weeks. I picked it up on the 16th of nov. The alignment was off and they found a bent rear upper control arm from factory. After that, it still pulled. They did road force testing and found the left front tire to be bad. They replaced it and said it was all fixed. As soon as i left i could feel it on the RH side this time. It now pulls heavily right when accelerating but stays completely straight when braking or coasting. But I have noticed if I set the diff to manual rear the pull is less noticeable but still present. Tire pressure is set to the recommended psi as well. I made an appointment for the 21st to get it inspected at another dealership. I am thinking the ****y tires are to blame? I'll be sure to post back when ever they figure it out! I am also going to try winter tires as well! |
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11-17-2017, 01:45 PM | #23 | |
Scooby Newbie
Member#: 454461
Join Date: Sep 2016
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Quote:
Think of it as the "Audi Experience" at a lower price .... |
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11-26-2017, 04:35 AM | #24 |
Scooby Newbie
Member#: 143254
Join Date: Mar 2007
Chapter/Region:
SWIC
Location: East Mesa
Vehicle:2007 STi UGM |
I just purchased a 18 STi as well and am having the exact same issue where the car pulls pretty hard to the right under acceleration. So much so where the car feels unpredictable and unstable in turns if you let off the gas.
The odd thing is I test drove another car a couple weeks back at a different dealership and it did the exact same thing! Thinking it was related to that specific car only I didn't even test drive mine before purchasing it... Has this been confirmed to be the tires??? Going to have to call the dealer Monday and see what they say... |
11-29-2017, 03:10 PM | #25 |
Scooby Specialist
Member#: 100300
Join Date: Nov 2005
Chapter/Region:
MWSOC
Location: MIC|-|IG/\N
Vehicle:06 WRX CGM |
Would too much gear backlash in one of the wheels cause any pulling symptoms?
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