Shimmying/Shaking Over 60 MPH

[Ann L.]

So sorry to read all of this. I have had to have my tired aligned at 10K miles. The Hyundai dealership tried to charge me, but found out on the 18 G90 Ultimate, the balancing is free.

 

[Andyj]

Ditch the Contis. Junk.

 

[bobferg2]

Equus Ultimate 2013

Had much the same problem - at times the front end started to shutter and vibrate. Not all the time, but certainly on trips from CA to CO. Several alignments, set of new tires, and wheel bearing inspections did not resolve the issue.

While driving to Denver, on the long downgrade of I-15 before entering NV, the vibrating started and I let it go and it got worse. I pulled to a stop on the roadside and got out to look at the front tires. Although not smoking, I smelled hot brakes. Had to be hanging brake pads or something.

When got to Denver, I visited Arapahoe Hyundai and spoke to Paul Grace. At lunch, he asked if I used the cruise control much? I said yes, and we went over the fact that the new "adaptive" system would keep you from going over the set speed, whereas, the older systems permitted you "coast" down a longer hill and pick up speed. He suggested that on long hills your CC applied brakes to keep the car from exceeding the speed setting. The brakes kept getting hotter and hotter until they began to shutter. So, the cure for my problem was to disengage the CC on long hills where the free rolling car speed wanted to exceed the CC setting.

I have 140,000 miles on the Equus, and am considering a 2017 G90 Ultimate with 30k miles, 5.0 AWD.

 

[Bernster]

For a lot of vibration problems road force balancing does the trick.

 

[lascelles wilson]

I lease a 2018 Genesis G90 5.0 HTRAC. I love the car. I leased it in July of 2018. I was childhood friends with the salesman and, because we knew each other and had previously discussed it, he knew that I absolutely cannot stand a vehicle that shakes or shimmies on the highway. Major, major issue for me. The day I took possession of the vehicle, he told me that he noticed the car shimmied/shook on the highway, even though it was brand new. It was a "demo" car, which apparently the dealership manager drove, and it had about 4,500 miles on the odometer when I leased it, but it will still deemed new. Anyway, they put a new set of tires on it at 4,500 miles just before I took possession of it.

Fast forward about eight months. It's shaking on the highway once I reach speeds of 60 m.p.h. or more, and it's driving me crazy. I take it back to the dealership, which is 2.5 hours away from where I live, and I'm told my rims are bent, presumably from hitting pot holes. I pay $250 to have a third party rim repair shop re-balance, or straighten out, my bent rims. Afterword, it drives much better. However, just a couple months later, I notice it's shaking again at highway speeds and it's driving me nuts. I take it back to the dealership (five hours of total drive time). I'm told my rear tires are below factory spec and the tread is worn down low, even though they only have 16,000 miles on them. I'm also told that the front two tires are cupped and have unevenly worn due to misalignment. I pay the dealership $607 for two new rear tires, and they cover the cost of the front two tires when I explain to them the history of the problem and the fact that they put four brand new tires on the car only one year ago. Now, it's still shaking above 60 m.p.h. It's not a jarring, crazy shaking, but it's enough to be extremely bothersome and frankly unacceptable for a $75,000 vehicle that carries a monthly payment that's about as much as my house payment.

What do I do now? Has anyone else experienced similar problems? When I had it in the shop this most recent time (earlier this month) I specifically asked if the rims were bent again and I was told no. I was also told that in order to totally fix the problem, I need four new tires. I now have four new tires and an alignment, and I still notice the shaking and it's driving my absolutely bonkers. Thoughts? Advice? Thanks in advance.

yes i too have noticed it since day one also brought it up to no avail along with that bottle head bounce

 

[lascelles wilson]

yes i too have noticed it since day one also brought it up to no avail along with that bottle head bounce

beginning to think its bushing problem

 

[lascelles wilson]

For a lot of vibration problems road force balancing does the trick.

tried that to no avail

 

[bobferg2]

This is the reason "Genesis" branding, so far, is not working. You don't have a competent dealer network because you don't have a large sales volume - which in turn causes you to not have the volume ..etc., etc. At best, you have Chevrolet service and attitude while you put your product out as Lexus or Mercedes quality, which it almost is. But if you can't fix a shimmy in the front end, you will never be considered as good as Lexus. Many say Hyundai knows the value of it's products, that's why they sell them for them for less. You never see many, if any, G90s or K 900s on California roads. Those Genesis and KIA's are great cars, they say. They just don't have the right badge or service. I'm going into my third Genesis or Equus. I buy one that's 18 to 24 mo. old, 25K or less miles, for 1/2 the sticker price. Still has 35K miles and 3 years of basic warranty left. Many that I look at have had 2 or 3 owners. They must have found something wrong - real or imagined. Someone in Korea better wake up. You sell so few, you could afford to have 2 dozen "Cracker Jack" factory mechanics jumping all over these problems, giving then immediate special attention with thorough "on the road" after repair studies to make sure the problem is fixed. Get good testimonials - publish them. Take factory people, bypass the dealer, work directly with the consumer who just spent $75K to buy a new car. Convert him into believing he made the right decision in buying the Genesis brand. He'll talk to his friends. They will drive and admire his car, especially at the price.

 

[jda8]

This is the reason "Genesis" branding, so far, is not working. You don't have a competent dealer network because you don't have a large sales volume - which in turn causes you to not have the volume ..etc., etc. At best, you have Chevrolet service and attitude while you put your product out as Lexus or Mercedes quality, which it almost is. But if you can't fix a shimmy in the front end, you will never be considered as good as Lexus. Many say Hyundai knows the value of it's products, that's why they sell them for them for less. You never see many, if any, G90s or K 900s on California roads. Those Genesis and KIA's are great cars, they say. They just don't have the right badge or service. I'm going into my third Genesis or Equus. I buy one that's 18 to 24 mo. old, 25K or less miles, for 1/2 the sticker price. Still has 35K miles and 3 years of basic warranty left. Many that I look at have had 2 or 3 owners. They must have found something wrong - real or imagined. Someone in Korea better wake up. You sell so few, you could afford to have 2 dozen "Cracker Jack" factory mechanics jumping all over these problems, giving then immediate special attention with thorough "on the road" after repair studies to make sure the problem is fixed. Get good testimonials - publish them. Take factory people, bypass the dealer, work directly with the consumer who just spent $75K to buy a new car. Convert him into believing he made the right decision in buying the Genesis brand. He'll talk to his friends. They will drive and admire his car, especially at the price.

I’ve had very poor service at the Genesis dealership that’s been working on my car. They finally fixed the shaking with a new set of road force balanced tires, but the way I was treated and the severe lack of professionalism and customer service was so disappointing. I never want to go back for any other service. I love the car, but hate the service aspect. Naturally, the dealership is used to selling and servicing Hyundais and they clearly have not done a thing to separate themselves and realize that a Genesis customer buying a $75,000 G90 is different than one who buys a $15,000 used Hyundai Accent. I expect a different experience. I didn’t get it.

 

[Ann L.]

Exactly my feelings. Genesis is killing itself from within.

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[ogogolby]

Had the same problem - 3 spin balancing tries -no help. Finally another dealer in FL road forced balanced and a new pair of (UGH) Conti's at Genesis expense solved the problem. Now if I could only get them to figure out where the wind leak in the driver's window is coming from......

 

[BDunagan]

I lease a 2018 Genesis G90 5.0 HTRAC. I love the car. I leased it in July of 2018. I was childhood friends with the salesman and, because we knew each other and had previously discussed it, he knew that I absolutely cannot stand a vehicle that shakes or shimmies on the highway. Major, major issue for me. The day I took possession of the vehicle, he told me that he noticed the car shimmied/shook on the highway, even though it was brand new. It was a "demo" car, which apparently the dealership manager drove, and it had about 4,500 miles on the odometer when I leased it, but it will still deemed new. Anyway, they put a new set of tires on it at 4,500 miles just before I took possession of it.

Fast forward about eight months. It's shaking on the highway once I reach speeds of 60 m.p.h. or more, and it's driving me crazy. I take it back to the dealership, which is 2.5 hours away from where I live, and I'm told my rims are bent, presumably from hitting pot holes. I pay $250 to have a third party rim repair shop re-balance, or straighten out, my bent rims. Afterword, it drives much better. However, just a couple months later, I notice it's shaking again at highway speeds and it's driving me nuts. I take it back to the dealership (five hours of total drive time). I'm told my rear tires are below factory spec and the tread is worn down low, even though they only have 16,000 miles on them. I'm also told that the front two tires are cupped and have unevenly worn due to misalignment. I pay the dealership $607 for two new rear tires, and they cover the cost of the front two tires when I explain to them the history of the problem and the fact that they put four brand new tires on the car only one year ago. Now, it's still shaking above 60 m.p.h. It's not a jarring, crazy shaking, but it's enough to be extremely bothersome and frankly unacceptable for a $75,000 vehicle that carries a monthly payment that's about as much as my house payment.

What do I do now? Has anyone else experienced similar problems? When I had it in the shop this most recent time (earlier this month) I specifically asked if the rims were bent again and I was told no. I was also told that in order to totally fix the problem, I need four new tires. I now have four new tires and an alignment, and I still notice the shaking and it's driving my absolutely bonkers. Thoughts? Advice? Thanks in advance.

Yes, I bought a new 2019 G90 in December 2019. I noticed the shaking vibration at highway speeds. Dealership did another force balance and returned the vehicle to me. Problem still exists. Dealership picked up vehicle and replaced all 4 tires. 2 weeks later, vibrations shaking returned. Dealership replaced tires again. Problem still exists. Filed complaint with BBB Auto Line ( which is in your owners manual). Had mediation requesting a repurchase by Genesis. Awaiting the response from the mediation regarding repurchase

 

[BDunagan]

Yes, I bought a new 2019 G90 in December 2019. I noticed the shaking vibration at highway speeds. Dealership did another force balance and returned the vehicle to me. Problem still exists. Dealership picked up vehicle and replaced all 4 tires. 2 weeks later, vibrations shaking returned. Dealership replaced tires again. Problem still exists. Filed complaint with BBB Auto Line ( which is in your owners manual). Had mediation requesting a repurchase by Genesis. Awaiting the response from the mediation regarding repurchase

Update- Received decision from BBB Auto Line on 5/22/20. Genesis was ordered to replace my G90 with a brand new G90!!!!

 

[EdP]

Update- Received decision from BBB Auto Line on 5/22/20. Genesis was ordered to replace my G90 with a brand new G90!!!!

Wow, good news. If they can fix it also good news for the next owner if the price is right.

 

[princelybug]

My vehicle displays the vibration from ~ 60mph-80mph. The ride is smooth < 60mph and > 80mph.

What do you think is the cause? Will a Hunter Road Force Balance do the trick, or could it be something else? The vibration only manifests within that 20mph span.

 

[MyCorvette]

My vehicle displays the vibration from ~ 60mph-80mph. The ride is smooth < 60mph and > 80mph.

What do you think is the cause? Will a Hunter Road Force Balance do the trick, or could it be something else? The vibration only manifests within that 20mph span.

My G90 also has this similar symptom.

Vibration only appears within a certain speed range indicates the issue is more probably due to the car body's 1st order dynamic torsional rigidity, not tire balancing.

If the tire is unbalanced, then the vibration will become more noticeable after a certain speed, and the higher the speed you go, the more serious the vibration will be. From your description, looks like it is not this case.

For the 1st order dynamic torsional rigidity (which unit is Hz), it is the periodic impact stimulus caused by uneven road surface starting to reach the 1st order natural harmonic frequency of the car frame structure, therefore causes resonance (vibration). When the vehicle speed is too low (or too high), the road impact frequency is far less (or exceed) the resonance frequency, therefore no noticeable vibration; but with the right speed range, the road impact frequency falls in the car body's resonance frequency spectrum, so vibration becomes extraordinary violent to be noticeable.

The vibration depends on the resonance frequency, and also the amplitude; this is totally different than static rigidity. For G90, Genesis only publishes its static rigidity numbers. Not sure how good (or bad) its dynamic rigidity will be.

Look at Car and Driver's review, they also mentioned the following, all in fact are related to the G90's dynamic rigidity properties:

Our 2017 Genesis G90 Soothes, Cossets, and Generally Impresses for 40,000 Miles

"throughout the car's 30,000-mile life so far with us, there's been a mild front-end shimmy that feels like a tire imbalance but isn't."

"The G90 ought to be structurally stiffer, which is especially noticeable as the car accelerates on corrugated surfaces. Imagine, here, a dog shaking water off its back. Of course, when you build a car that is 204.9 inches long, it wants to twist."

 

[MyCorvette]

I used to own a F01 7 series, it has good static rigidity, but very bad dynamic rigidity. At speed around 60mph, the vehicle is shaking like hell (to the extent that the passenger seat frame developed metal fatigue and some internal metal parts broke after 1 yr of use). But when speed is over 85mph, it starts to calm down and for speed > 95mph, it is as smooth as if the car is floating in the air.

Absolutely not tire issue (already balanced them by all imaginable means multiple times) and I test drove many other 7 series inventory, all with the same symptom.

 

[BDunagan]

My vehicle displays the vibration from ~ 60mph-80mph. The ride is smooth < 60mph and > 80mph.

What do you think is the cause? Will a Hunter Road Force Balance do the trick, or could it be something else? The vibration only manifests within that 20mph span.

Force balance will work for a few weeks but the vibration will return. I actually think it’s a defect with the wheels, not the tires. My tires were replaced on 3 different occasions and it still did not resolve the issue. Genesis is aware of this but prefers to turn a blind eye which is why I opted the dispute resolution route, which is located in your owner’s manual. I was fed up with excuses.

 

[princelybug]

@MyCorvette @BDunagan Thank you both for your responses! They were extremely helpful.

@MyCorvette I now have a better understanding of "torsional rigidity" over and beyond "the higher the better", when the magazines state the numbers.

@BDunagan I'm going to cancel my Road Force Balance appointment which I didn't want to go to in the first place, lol. This is ammunition for changing the wheels to aftermarket I can use with the wife!

 

[EdP]

My vehicle displays the vibration from ~ 60mph-80mph. The ride is smooth < 60mph and > 80mph.

What do you think is the cause? Will a Hunter Road Force Balance do the trick, or could it be something else? The vibration only manifests within that 20mph span.

My first Genesis was like that. Not real bad but noticeable. Balance did little but new tires fixed it.