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2018 - steering wheel shake

Rash

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Noticed on drive home from delivery a slight steering wheel shake at highway speed. Seems to be off and on not constant. Didn't think much of it as I assumed maybe it was a wheel balance issue or flatspotting. Since I was replacing the wheels/tires, I didn'r much care. Well, replaced the wheels/tires, and it's still there. Now I'm concerned it might be part of the driveline vibration issue since I read that steering wheel shake can be part of it. I haven't noticed floor pan vibration or anything like that, but I've only driven it three times at this point - 90 miles or so.

Thoughts? Anyone else notice this on their 2018?
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Rash said:
Noticed on drive home from delivery a slight steering wheel shake at highway speed. Seems to be off and on not constant. Didn't think much of it as I assumed maybe it was a wheel balance issue or flatspotting. Since I was replacing the wheels/tires, I didn'r much care. Well, replaced the wheels/tires, and it's still there. Now I'm concerned it might be part of the driveline vibration issue since I read that steering wheel shake can be part of it. I haven't noticed floor pan vibration or anything like that, but I've only driven it three times at this point - 90 miles or so.

Thoughts? Anyone else notice this on their 2018?
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No shake at any speed in mine, even at 100. I would call the dealership.
 

HeelToeHero

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Shake in the wheel is front end. Not likely driveline related.
 
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Rash

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HealToeHero said:
Shake in the wheel is front end. Not likely driveline related.
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That was my assumption from past experience - usually tire or wheel issue. But I read some posts here that said it can be part of the driveline vibration issue.

Just to clarify also - you can actually see the back and forth movement of the steering wheel shake very much like you would with a flatspotted tire but it's slight. I wouldn't call it a vibration, more of a shimmy. I have had this type of shimmy many times with my 06 and it was always a tire issue, but that seems weird this time since it's occurred with two sets of wheels/tires. I suppose it's possible that they are both out of balance, but improbable IMO.
 
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usgiorgi

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Could be an alignment issue. Do you notice any feathering on the tire? If so it's probably toe in/out that needs to be adjusted. Take it to the dealer and they can check it. A new car shouldn't have any sort of shake.
 

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HeelToeHero

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usgiorgi said:
Could be an alignment issue. Do you notice any feathering on the tire? If so it's probably toe in/out that needs to be adjusted. Take it to the dealer and they can check it. A new car shouldn't have any sort of shake.
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Yup take it in!
 
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if this were a s197, i would have said it is a EPAS related issue...
 

Anthony 05 GT

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Sounds like a wheel needs to be re-balanced or a defective tire.
 

Mustg3

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If the vib decreases when you let up on gas peddle then chances are its coming from the driveline.
 

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Rash

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Well, just checked the the tire pressure for first time after getting the new wheels - Discount Tire had 3 of them at 36 and one at 38. Supposed to be 32. So maybe that had a bit to do with it. I'll find out when I drive it again in a couple days.
 

michail71

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According to TPMS mine seem to be about 40 PSI after taking delivery. The only CarFax log at the moment shows the dealer did a Nitrofill.

I may need to bleed off some pressure if 32 is the target.
 
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Rash

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Kronos said:
Update??
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It's become apparent after 2000 miles that the wheel shake on my car is tire flatspotting, as well as probable imperfect balancing. Haven't had a chance to have them rebalanced. Thankfully, I don't think it is driveline related. I've had it on a couple long trips now and there is no driveline vibration.
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