Steering wheel shake / vibration at highway speeds ( 60 mph + )

[Starter986]

Front to back. Vice-versa?

Likely you have a staggared setup... so that's not going to happen.

Me? I'm next taking it to a pro tire shop ) not a local independant (Joe's Tires) and having them perform a tire inspection.

How old are your tires? How are your wheel bearings? Did you try the 9/3... 12/6 method?

If evrything looked good... then I'm waiting on someone far more mechanically inclined than I to offer up some suspension diagnostics.

New tires might do the trick. Might.

Good luck. Report back... don't leave us hanging.

[BoxsterInTheSun]

Great questions. Let me try and answer them here...

Originally Posted by Starter986

Front to back. Vice-versa?

Likely you have a staggared setup... so that's not going to happen.

I was going to rotate them front to back. I'm not toally sure what a staggered setup is, but thought it would be possible as the tires are currently the exact same size on the front and the back, just different models of tire. I could easily be missing something though.

Originally Posted by Starter986

Me? I'm next taking it to a pro tire shop ) not a local independant (Joe's Tires) and having them perform a tire inspection.

In theory the shop that did the alignment and road force balancing was a pro tire shop, Wheelworks here in San Jose.

Originally Posted by Starter986

How old are your tires? How are your wheel bearings? Did you try the 9/3... 12/6 method?

Date stamp is 17th week of 2021, so under 4 years old and visually in great shape. I haven't tried the 9/3, 12/6 test so will look into that.

Originally Posted by azlvr

Look for bent rims, that was my problem

Is this something that can be done visually? Or needs to be done by a tire shop?

Originally Posted by Danimal

I’m in the same boat (think you may have seen my other post). Anyway I just ordered new control arms and tie rods front and rear. I figured if I have to do another alignment I’m going to do everything at once. I’ll let you know what I find. I’m pretty sure it’s my front lower control arms.

Thanks so much for the update, I'll be eagerly waiting to hear your results, I had considered this as a potential fix also. How much is that job going to run you in parts?

Thanks again everyone for the help!

[Gilles]

If you already tried all the suggestions, and still have slight vibrations, then my bet would be on worn struts..

[Dog'sLife]

Originally Posted by BoxsterInTheSun

Great questions. Let me try and answer them here...

I was going to rotate them front to back. I'm not toally sure what a staggered setup is, but thought it would be possible as the tires are currently the exact same size on the front and the back, just different models of tire. I could easily be missing something though.

The Boxster has different tire widths front and rear. The rear are much wider. If yours are not, that's a good starting point.

[Danimal]

More than I'd like to admit! I also ordered bearings, axle nuts, and swaybar bushings. I'm preparing for battle! When a Porsche shop wants $300 an hour to do anything, I'd rather just replace it for a couple hundred bucks and not leave it up to chance. Plus everything will be apart anyway.

Originally Posted by BoxsterInTheSun

Great questions. Let me try and answer them here...



I was going to rotate them front to back. I'm not toally sure what a staggered setup is, but thought it would be possible as the tires are currently the exact same size on the front and the back, just different models of tire. I could easily be missing something though.



In theory the shop that did the alignment and road force balancing was a pro tire shop, Wheelworks here in San Jose.



Date stamp is 17th week of 2021, so under 4 years old and visually in great shape. I haven't tried the 9/3, 12/6 test so will look into that.



Is this something that can be done visually? Or needs to be done by a tire shop?



Thanks so much for the update, I'll be eagerly waiting to hear your results, I had considered this as a potential fix also. How much is that job going to run you in parts?

Thanks again everyone for the help!