Say Goodbye to the Flat Spotted Tires / Shuttering Theory

[dboz1031]

ARC, I have shifted gears in the vibration area and it stays the same. Also, I get the vibration at stops but much more subtle. I can feel it the wheel. Much worse right after sitting and is completely cold. I can also tell as soon as I start my car if it will vibrate at 27-29 MPH because I can already feel the vibration in the wheel from the converter.

But while you are playing around, try this, Find a very steep incline, like coming out of some parking area or a steep hill and come to a stop and see if you notice a distinct increase in vibration. I still believe its converter because its a fluid thing I think. I can get the vibration while stopped on a steep incline many times but not every time.

Ryan, yes, I get the highway issues also and even have told my wife to hold the wheel so she can feel it, in several miles it will just go away and I have her check it again and its really distinct in the difference in character. Could be the shaft, but I just don't lean that way because I cannot figure out how it would come and go or explain my issues sometimes even while stopped.

I will say this, they reset my transmission and I do get much less frequency now but still present, still random and can be fine for a day and then horrible the next.

Just my observations to see if anyone else can reproduce any of this.

 

[joegr]

There are some phone apps that analyze vibration. I wonder if any of them would be good enough to accurately give the frequency of the vibrate you are getting? If one could, and you noted the exact speed you were going at the same time, you might be able to narrow down what it could be. For example, you can calculate the RPM of the driveshaft at that speed and convert that to RPS (revolutions per second) and compare that to the vibration frequency.

 

[Celtman]

And here is the TSB

Thanks so much! For the record, I have a 2020 AWD Ultimate with the 3.8. My shudder is in the 28-30 range and continues after three tires were replaced for being out of spec on a road force balance. Unfortunately, I needed to bring this TSB to my dealers attention...we'll see what happens from here.

 

[osnv]

Just FYI, after the TSB was performed (two washers installed to correct the angle) the vibration is practically non-existent. I can detect a very slight one since I know what to listen to and what to expect, but no dealer would ever do anything since it's really hardly noticeable. Overall, a significant improvement after the TSB.

 

[limitwheel]

I've been watching this post for quite some time and anything related to driveline vibration.
I did notice that my vibration would be evident at the start of a new day and seems to be temperature related the colder it is .
After driving approximately 2 miles or so the vibrations would seem to dissipate.
All this time I was blaming it on tire flat-spotting. I purchased the car new and it had the Michelin Primacy tires.
I now have Michelin Pilot Sport AS+3 and the vibration is still the same.
This February is my 5 year mark, but the warranty is covered for 10 years or 100K on the engine and drivetrain.
If any further developments should happen, then I should be good for a warranty issue, correct?

I'm thinking of having the tires road forced balanced to see if any improvement would be made.

What are your thoughts?

I'm aware of the TSB but would try to avoid the dealer at all costs within reason.

2016 Hyundai Genesis 3.8 RWD
35,000 miles

 

[osnv]

I've been watching this post for quite some time and anything related to driveline vibration.
I did notice that my vibration would be evident at the start of a new day and seems to be temperature related the colder it is .
After driving approximately 2 miles or so the vibrations would seem to dissipate.
All this time I was blaming it on tire flat-spotting. I purchased the car new and it had the Michelin Primacy tires.
I now have Michelin Pilot Sport AS+3 and the vibration is still the same.
This February is my 5 year mark, but the warranty is covered for 10 years or 100K on the engine and drivetrain.
If any further developments should happen, then I should be good for a warranty issue, correct?

I'm thinking of having the tires road forced balanced to see if any improvement would be made.

What are your thoughts?

I'm aware of the TSB but would try to avoid the dealer at all costs within reason.

2016 Hyundai Genesis 3.8 RWD
35,000 miles

I had my tires "shaved" to make them perfectly round, I had them road force balanced, and I had a brand new set of tires installed, - the vibration was still there no matter what was done to the tires. I had front and rear driveshafts and a transfer case replaced. I have been fighting for almost 2 years and it came to the point that the Hyundai engineering claimed they could not do anything. They had a field engineer fly over to inspect the car and to claim the problem was caused by the tires or rims. The dealership replaced both with no change whatsoever. The only thing that made a difference was the TSB, I keep my fingers crossed that this fix will last...

 

[limitwheel]

I was rereading the TSB concerning the measuring and adjusting of the driveshaft angles and realized that the TSB only addresses the AWD version with no mention of the RWD version.

 

[Kraig Wilkinson]

I've been watching this post for quite some time and anything related to driveline vibration.
I did notice that my vibration would be evident at the start of a new day and seems to be temperature related the colder it is .
After driving approximately 2 miles or so the vibrations would seem to dissipate.
All this time I was blaming it on tire flat-spotting. I purchased the car new and it had the Michelin Primacy tires.
I now have Michelin Pilot Sport AS+3 and the vibration is still the same.
This February is my 5 year mark, but the warranty is covered for 10 years or 100K on the engine and drivetrain.
If any further developments should happen, then I should be good for a warranty issue, correct?

I'm thinking of having the tires road forced balanced to see if any improvement would be made.

What are your thoughts?

I'm aware of the TSB but would try to avoid the dealer at all costs within reason.

2016 Hyundai Genesis 3.8 RWD
35,000 miles

Hey Limitwheel, I have a 2015 5.0 Ultimate. I purchased new tires back at the end of Sept. Conti DWS06. Awesome tire ,however We had to go through 5 tires to find 2 good ones for the front, and 6 tires to find 2 good ones for the rear. They would not pass road force balancing. Now with the tires road force Balanced car is correct. Also if the tire won't pass Road Force , they sometimes can break it down and lube up the bead of the tire big time , like really lube it up and remount tire and the road force will drop to a acceptable number. I had one last week. 35lbs they spun tire and tried again, 19lbs, they broke it down lubed up bead really really well and remount 10 lbs of road force!!

 

[arcman]

Not so awesome if it took eleven tires to find four good ones. That's a pretty dismal ratio. I'll pass on Conti's.

What would adding more tire lube do for balancing? From your explanation above, it sounds like they need a new balancer.

 

[limitwheel]

What puzzles me the most about this vibration issue is why does the vibration go away after driving a few miles if all this is not caused by tire flat spotting?

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[Kraig Wilkinson]

Not so awesome if it took eleven tires to find four good ones. That's a pretty dismal ratio. I'll pass on Conti's.

What would adding more tire lube do for balancing? From your explanation above, it sounds like they need a new balancer.

Lube Allows the bead of tire to seat 100% square with the rim. I have personally seen 3 tires drop 20+ lbs of road force just from that procedure!! Believe or not, witnessed with my own eyes..at 2 different tire shops No Bullshit .
IMO Conti DWS06s is a good tire.

 

[dboz1031]

I might have a breakthrough. I am going to see how things go for the next few days to be sure but initially it looks promising.

 

[Kraig Wilkinson]

I might have a breakthrough. I am going to see how things go for the next few days to be sure but initially it looks promising.

What is your breakthrough?

 

[dboz1031]

Dealer has gone back to the "unable to reproduce" card as my car shook while leaving the lot. They must be told to just say this because I had this escalated to my second corporate case. There is no fix because they've simply don't want it fixed. If it's a bad part function or design they should be able to come up with something different. I might just try to get a custom shaft made at this point. I get pissed off everytime I drive this car but I am refusing to sell and take a monster bath. My car is under warranty and should be fixed or replaced by Hyundai. I thought the dealer was gonna push and they were at first, then just came back with the blow off bullsh@t line. 2 weeks more in the shop. My car has been in for a month total this year and 2 months worth last year. It's ridiculous and Hyundai should be embarrassed. I see this also on Stingers so maybe it's the same shaft and they use the same transmission. I am just going to keep taking it back over and over and next time I am going to turn into an obnoxious ass in the store in front of all the customers to hear. I have had it.

 

[milesperhour]

Used to live in the mIdwest.. the cold made my 16 Genie shake like an alcoholic needing a drink at 30mph.
Now I live in Florida as I thought the heat would help. Nope!

Dealer changed the entire Driveshaft 2 weeks ago - The NEXT day the car still vibrates around 30mph. Of course, they blame tires.. They rotate them to no change whatsoever,. Now they say my Michelin Pilot tires are not factory recommended and that's the problem. I try to tell them about these blogs of hundreds of thousands discussing this issue. Lots of FB groups as well discussing this.. They act like they don't know anything about it. Lies!

Called another dealer and said have you heard about this VERY common issue.. He says I've NEVER heard of it. LOL.

I was in love with this car and now it's like a high-maintenance girlfriend who looks hot on the outside but is just flat out annoying. I just want out of this relationship.

 

[PaulZooms]

... I was in love with this car and now it's like a high-maintenance girlfriend who looks hot on the outside but is just flat out annoying. I just want out of this relationship.

LOL, good one. Have you thought about trying new tires? Maybe baby needs new shoes. Luxury cars can also be high maintenance.

A new set of Bridgestone Turanza Quitetrack’s or Continental Purecontact LS’s could make all the difference. If you get them at Discount Tire, you can return them if they don’t. Heck, try em both if necessary. Just make sure to keep your old tires until you decide.

 

[Z1000SX]

LOL, good one. Have you thought about trying new tires? Maybe baby needs new shoes. Luxury cars can also be high maintenance.

A new set of Bridgestone Turanza Quitetrack’s or Continental Purecontact LS’s could make all the difference. If you get them at Discount Tire, you can return them if they don’t. Heck, try em both if necessary. Just make sure to keep your old tires until you decide.

With all respect, your suggestion of tires as a solution ignores the experience of many other owners who have posted about it on this thread, including me. In my case new Conti Viking snows on new alloy wheels, all meticulously balanced, made zero difference to the 25 - 45 vibration. In short, new tires would be a waste of time and money. In my case the dealership service department has been great so far. I am awaiting arrival of parts for the replacement of all shafts, carriers and bearings between the transfer case and final drive. If, as I fear, it does not solve the problem it will be interesting to see what they and Genesis Canada will do (or not do) next. I use the tem "interesting" in the context of the ancient Chinese curse: "May you live in interesting times!"

 

[Andyj]

I would think original owners in states with a lemon law should have recourse after 3 failed attempts to fix this.

 

[PaulZooms]

With all respect, your suggestion of tires as a solution ignores the experience of many other owners who have posted about it on this thread, including me. In my case new Conti Viking snows on new alloy wheels, all meticulously balanced, made zero difference to the 25 - 45 vibration. In short, new tires would be a waste of time and money. In my case the dealership service department has been great so far. I am awaiting arrival of parts for the replacement of all shafts, carriers and bearings between the transfer case and final drive. If, as I fear, it does not solve the problem it will be interesting to see what they and Genesis Canada will do (or not do) next. I use the tem "interesting" in the context of the ancient Chinese curse: "May you live in interesting times!"

Point taken. Should have read the whole thread before responding

On my daughter’s 15 ‘G80’, replacing the OEM tires with Michelins resolved a similar issue. FWIW, milesperhour’s Gennie was a 16.

 

[dboz1031]

The OEM tires are Michelins. And they are junk.