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Old 01-17-2018, 10:28 AM   #1
Blue Rex 15
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Default Front tires wobbling/catching

Not sure if this is the right section, but here it goes...I have a 2015 WRX, and over the last few months, I've noticed some really bad "catching" in the front tires. This is what happens: when I back out of my driveway in the morning, I cut the wheel to the left. My driveway has a very slight incline...maybe an inch or two...but it's almost the same level as the street. Anyway, when I back out and cut the wheel, it feels like my tires have giant eggs in them, like I'm rolling on a tire with a huge bump in it, and it feels like it catches on something underneath the car. I have no idea what this is as this is the only time I've experienced it. I took it down the road to an open parking lot and did some slow speed figure 8's in reverse and wasn't able to duplicate the issue, so I don't know if it's the slight decline coming out from my driveway or what, but I'm worried about what the potential issue might be. Has anyone experienced this or know what could potentially be the issue?
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Old 01-17-2018, 10:49 AM   #2
Samurai Jack
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Check your front endlinks, sway bar mounts and tie rods.

Sounds like:
- something may be loose, and only shows up with the incline on your driveway, as opposed to a flat surface.
- something is rubbing / binding / does not have enough clearance

Have you tried this on any other incline to see if it does it other than your driveway?
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Old 01-17-2018, 02:46 PM   #3
jamal
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Are wheels coming off the ground? The diffs have a hard time dealing with that even if it's just one front or rear tire.
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Old 01-17-2018, 07:22 PM   #4
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Quote:
Originally Posted by Blue Rex 15 View Post
Not sure if this is the right section, but here it goes...I have a 2015 WRX, and over the last few months, I've noticed some really bad "catching" in the front tires. This is what happens: when I back out of my driveway in the morning, I cut the wheel to the left. My driveway has a very slight incline...maybe an inch or two...but it's almost the same level as the street. Anyway, when I back out and cut the wheel, it feels like my tires have giant eggs in them, like I'm rolling on a tire with a huge bump in it, and it feels like it catches on something underneath the car. I have no idea what this is as this is the only time I've experienced it. I took it down the road to an open parking lot and did some slow speed figure 8's in reverse and wasn't able to duplicate the issue, so I don't know if it's the slight decline coming out from my driveway or what, but I'm worried about what the potential issue might be. Has anyone experienced this or know what could potentially be the issue?
i've had this on my driveway. if i back into the alley in a certain way i will get a wheel in the air. i haven't tested slow speed figure 8s. also happens some time if i'm backing over something like ice or wet slippery painted stuff, i feel the wheel slip a bit. but my tires are also shot.
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Old 01-18-2018, 11:25 AM   #5
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Quote:
Originally Posted by Blue Rex 15 View Post
Not sure if this is the right section, but here it goes...I have a 2015 WRX, and over the last few months, I've noticed some really bad "catching" in the front tires. This is what happens: when I back out of my driveway in the morning, I cut the wheel to the left. My driveway has a very slight incline...maybe an inch or two...but it's almost the same level as the street. Anyway, when I back out and cut the wheel, it feels like my tires have giant eggs in them, like I'm rolling on a tire with a huge bump in it, and it feels like it catches on something underneath the car. I have no idea what this is as this is the only time I've experienced it. I took it down the road to an open parking lot and did some slow speed figure 8's in reverse and wasn't able to duplicate the issue, so I don't know if it's the slight decline coming out from my driveway or what, but I'm worried about what the potential issue might be. Has anyone experienced this or know what could potentially be the issue?

Quote:
Originally Posted by _brian_
i've had this on my driveway. if i back into the alley in a certain way i will get a wheel in the air. i haven't tested slow speed figure 8s. also happens some time if i'm backing over something like ice or wet slippery painted stuff, i feel the wheel slip a bit. but my tires are also shot.
What are your suspension set-ups? Are you both OEM or did you make suspension mods?

If you made suspension mods, what are they?

It's beginning to sound more and more that you both have thick front sway bars, which is binding up the suspension.
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Old 01-20-2018, 11:18 AM   #6
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Quote:
Originally Posted by Samurai Jack View Post
What are your suspension set-ups? Are you both OEM or did you make suspension mods?

If you made suspension mods, what are they?

It's beginning to sound more and more that you both have thick front sway bars, which is binding up the suspension.
stock front sway bar and bushings

rce yellows, gtworx shocks, full spectrum camber plates, superpro ball joints, group n front control arm bushings, perrin rear sway bar, rallitek endlinks, spc rear lca, superpro rear subframe bushings, whiteline diff mounts
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Old 01-22-2018, 09:06 AM   #7
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Quote:
Originally Posted by Blue Rex 15 View Post
This is what happens: when I back out of my driveway in the morning, I cut the wheel to the left.
Anyway, when I back out and cut the wheel, it feels like my tires have giant eggs in them, like I'm rolling on a tire with a huge bump in it, and it feels like it catches on something underneath the car.
When you say "cut the wheel", how far are we talking here?
- 1/2 way?
- full lock?

- does it feel as if you are rolling over something or more like a judder? You said "catching" so maybe this is what it really is, a judder?

*NOTE* judder = to vibrate with intensity
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Old 01-22-2018, 09:45 AM   #8
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Quote:
Originally Posted by Samurai Jack View Post
When you say "cut the wheel", how far are we talking here?
- 1/2 way?
- full lock?

- does it feel as if you are rolling over something or more like a judder? You said "catching" so maybe this is what it really is, a judder?

*NOTE* judder = to vibrate with intensity
for me, full or near full lock in reverse is when it feels like the wheel shakes and makes an audible pop sound. happened to me in a parking lot yesterday. i might be able to go out and get some video of it today
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Old 01-22-2018, 11:34 AM   #9
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Have you checked your power steering fluid reservoir?
Is it low?
Is the fluid dirty?
Have you done anything with the steering rack?
Do you have any PS leaks?

You may have air in the PS system
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Old 01-22-2018, 11:47 AM   #10
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Quote:
Originally Posted by Samurai Jack View Post
Have you checked your power steering fluid reservoir?
Is it low?
Is the fluid dirty?
Have you done anything with the steering rack?
Do you have any PS leaks?

You may have air in the PS system
It's electric PS in the 15+ WRX.
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Old 01-22-2018, 11:55 AM   #11
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Quote:
Originally Posted by Obviously Tyler View Post
It's electric PS in the 15+ WRX.
Ok, but that doesn't make sense since the 2015 WRX has a fluid reservoir and hydraulic lines.
https://www.subaruparts.com/auto-par...e/steering-cat

The 2015 Impreza appears to have electric steering
https://www.subaruparts.com/auto-par...d-linkage-scat

Last edited by Samurai Jack; 01-22-2018 at 12:09 PM.
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Old 01-22-2018, 02:22 PM   #12
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Quote:
Originally Posted by Samurai Jack View Post
Ok, but that doesn't make sense since the 2015 WRX has a fluid reservoir and hydraulic lines.
https://www.subaruparts.com/auto-par...e/steering-cat

The 2015 Impreza appears to have electric steering
https://www.subaruparts.com/auto-par...d-linkage-scat
Those hydraulic parts are for the 2015+ "WRX STI". The standard WRX has electric PS.
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Old 01-22-2018, 02:29 PM   #13
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Quote:
Originally Posted by Blue Rex 15 View Post
Not sure if this is the right section, but here it goes...I have a 2015 WRX, and over the last few months, I've noticed some really bad "catching" in the front tires. This is what happens: when I back out of my driveway in the morning, I cut the wheel to the left. My driveway has a very slight incline...maybe an inch or two...but it's almost the same level as the street. Anyway, when I back out and cut the wheel, it feels like my tires have giant eggs in them, like I'm rolling on a tire with a huge bump in it, and it feels like it catches on something underneath the car. I have no idea what this is as this is the only time I've experienced it. I took it down the road to an open parking lot and did some slow speed figure 8's in reverse and wasn't able to duplicate the issue, so I don't know if it's the slight decline coming out from my driveway or what, but I'm worried about what the potential issue might be. Has anyone experienced this or know what could potentially be the issue?
I have the exact same issue when backing out of my drive way and turning to the left. I also have an about 1" falloff from my driveway to the street. When a wheel goes off the bump as I slowly back out there is a pop and a loose clunking feeling. Someday s/situations it is worse then others.

I also have other front suspension noises that I am curious if you have as well.

1. When stopped and turning the steering wheel back and fourth quickly I get a popping/clunking. See my video linked below. I can reproduce it 100% of the time.


2. When driving slowly, either turning or going straight, and a wheel (driver or pass) drops in a pot hole, or bump, or over a rough road, there is clunking from the front.

I am curious if you have either of these issues. I believe they are either from the steering rack or front suspension. My car is 100% stock, an it has been doing this for the last 15k miles (I am at 20k now).
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Old 01-22-2018, 03:06 PM   #14
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Quote:
Originally Posted by whiplash willy View Post
Those hydraulic parts are for the 2015+ "WRX STI". The standard WRX has electric PS.
According to Subaru, it is for both 2015 WRX and 2015 STi.

Just look at the "What This Fits".
Now, they could have posted the information incorrectly.
How are you determining that the hydraulic steering is ONLY for the STI and not the WRX?

Blue Rex 15, can you post a video of the noise?
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Old 01-22-2018, 03:29 PM   #15
Obviously Tyler
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Quote:
Originally Posted by Samurai Jack View Post
According to Subaru, it is for both 2015 WRX and 2015 STi.

Just look at the "What This Fits".
Now, they could have posted the information incorrectly.
How are you determining that the hydraulic steering is ONLY for the STI and not the WRX?

Blue Rex 15, can you post a video of the noise?
Not to argue, but both of us have 16 WRXs. And my steering is 100% electric.

I don't think they would've changed it over 1 model year.
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Old 01-22-2018, 04:24 PM   #16
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Not trying to argue, just noting the discrepancy between what you have both stated, and what the Subaru Parts Diagrams are clearly showing.

2015 & 2016 WRX and STi are both showing hydraulic steering.

2015 Impreza is showing electric steering.
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Old 01-22-2018, 05:38 PM   #17
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Quote:
Originally Posted by Obviously Tyler View Post
Not to argue, but both of us have 16 WRXs. And my steering is 100% electric.

I don't think they would've changed it over 1 model year.
Quote:
Originally Posted by Samurai Jack View Post
Not trying to argue, just noting the discrepancy between what you have both stated, and what the Subaru Parts Diagrams are clearly showing.

2015 & 2016 WRX and STi are both showing hydraulic steering.

2015 Impreza is showing electric steering.
2015+ WRXs have an EPS made by KYB.

2015+ STIs have a hydraulic rack

If you still need convincing, look at the FSM Pages "PS2" and "PS3" are below and show the STI as Hydraulic and the WRX.



I am not sure where you are seeing the the WRX's Steering rack is listed as hydraulic, but what you are seeing is a miss print.

Lookup part number 34110VA010. It clearly shows an electric PS Rack for the 2015 WRX.

https://parts.subaruonlineparts.com/...ItMGwtaDQtZ2Fz

I think part of the confusion is if you look up and 2015+ wrx on subaru's part website, it first comes up with a hyraulic rack (which is for the "WRX STI") and the other part is both WRX and STI parts are listed together in websites and the FSM, you just have to differentiate the 2.

Last edited by whiplash willy; 01-23-2018 at 11:51 AM.
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Old 01-23-2018, 10:07 AM   #18
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Agree that what you are showing shows the 2015+ WRX/STi racks as being electric, clearly shown where it says, " This Part Also Fits "

However, if you look at the links I posted from SubaruParts.Com, it says something different.

Also, IF the 2015+ STi Steering Rack really is electric, then you could not use the 2015+ steering rack in earlier models.

There is more than one thread on how to make the swap and no where in that swap is anything mentioned as having to convert over to electric from hydraulic.
If you look at the FASTWRX website, it clearly shows the 2015+ STi steering rack as hydraulic: https://www.fastwrx.com/products/2015-sti-steering-rack.
The same posting also says:
Quote:
Originally Posted by FASTWRX
This rack will bolt directly in to any 2008-2014 WRX or STI. It can also be installed on older WRX and STI cars, with some modification required to the chassis.
This would not be true/possible if the 2015+ STi rack was electric.

So, something, somewhere, is amiss.

Last edited by Samurai Jack; 01-23-2018 at 10:17 AM.
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Old 01-23-2018, 11:41 AM   #19
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Quote:
Originally Posted by Samurai Jack View Post
Agree that what you are showing shows the 2015+ WRX/STi racks as being electric, clearly shown where it says, " This Part Also Fits "

However, if you look at the links I posted from SubaruParts.Com, it says something different.

Also, IF the 2015+ STi Steering Rack really is electric, then you could not use the 2015+ steering rack in earlier models.

There is more than one thread on how to make the swap and no where in that swap is anything mentioned as having to convert over to electric from hydraulic.
If you look at the FASTWRX website, it clearly shows the 2015+ STi steering rack as hydraulic: https://www.fastwrx.com/products/2015-sti-steering-rack.
The same posting also says:

This would not be true/possible if the 2015+ STi rack was electric.

So, something, somewhere, is amiss.
THE STI RACK IS HYDRAULIC

THE WRX RACK IS ELECTRIC

I was not showing anything that stated both WRX and STI were electric. Look at my screenshot from the FSM and re-read the highlighted parts.

Also look at this from cars101:
*Note the highlighted text under WRX that shows Electric, and the highlighted text under the STI that shows Hydraulic.


Last edited by whiplash willy; 01-23-2018 at 11:48 AM.
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Old 01-23-2018, 03:46 PM   #20
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Quote:
Originally Posted by whiplash willy View Post
THE STI RACK IS HYDRAULIC

THE WRX RACK IS ELECTRIC
Calm down already. It's a discussion, not an argument.

Quote:
Originally Posted by whiplash willy
I was not showing anything that stated both WRX and STI were electric. Look at my screenshot from the FSM and re-read the highlighted parts.
Try going back and actually looking at the link you posted: https://parts.subaruonlineparts.com/...ItMGwtaDQtZ2Fz

According the link you posted, it clearly states that the electric rack is for BOTH the 2015+ WRX and the 2015+ STi. I'm not making this stuff up.
If you actually read what I posted, I pointed this out.
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Old 01-23-2018, 04:27 PM   #21
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I'm just going to leave this link to the STI front 4 pot calipers here.

https://parts.subaru.com/p/Subaru_20...6292FG001.html

I didn't know that the 2011 impreza came with the sti 4 pot calipers.

Subaru parts references are weird. they list what cars the part will literally fit, but not necessarily that these cars came with the part from factory.


edit: also, just in case it's still not clear

Quote:
And most importantly, the STI keeps hydraulic steering assist, screwed into a quicker (13.0:1) rack. (The WRX's electric power assist works on a 14.5:1
rack.)
Source: http://www.roadandtrack.com/new-cars...ubaru-wrx-sti/

Subaru themselves also make distinction

https://www.subaru.com/vehicles/wrx/...-wrapper-modal

go down to chassis and look at the first 3 items(didn't know the base had a different ratio than the premium and limited).

WRX is listed specifically as electric power assisted

Last edited by IndecisiveS12; 01-23-2018 at 04:34 PM.
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